*Last modified on 30 April 2009
visitors since 26 February 2004 ( Page 1 / Page 2 / Page 3 / Page 4 / Page 5 )
Introduces the various gemstones and jewels (Minerals, Gemstones, Gems, Accessories) that have been collected by my hobby. Everything I've collected mainly cheapness (except for some one) and beautiful items. You can see large image to click on a thumbnail picture. I'm every time healed so much when seeing innocent beautiful stones which is a gift from the Nature. Please delight yourself with their beauty. Well, sorry these are not for sale...m(_ _)m

*This page just has been created for my satisfaction, and so forgive me though displaying is heavy so much, if your network connection is not broadband.

Power Stone's Sphere & Egg

1) Rose Quarz - Pedestal of Hexagon
2) Citrine Egg
3) Aquamarine 12mm Sphere
4) Natural Violet Agate 12mm Sphere
5) Rutilated Quartz 12mm Sphere
6) Labradorite 12mm Sphere
7) Inca Rose (Rhodochrosite) Egg




[ The panorama of my collection ]




Point / Tumble / Pebble

Green Flourite Point (China)
105x25mm Weight:150g
Chemical Formula:
CaF2
*A stone composed of fluorine and calcium. Gives out the fluorescence and phosphorescence when it is heated, and when it is exposed to the ultraviolet rays. Flourite is used as a jewel, and also an iron refining, a ceramic industry, an optical glass, and the raw material of fluorine and the hydrofluoric acid.
Citrine Point (Brazil)
Height:41mm Weight:60g
Chemical Formula: SiO2
*This is a natural Citrine and the cause of yellow is depending on iron. Currently many yellowish brown citrines are made by heating Amethyst (heat treatment). Those Citrines are called as "Citrine-Topaz".
Crystal Big Tumble (Brazil)
52x30x26mm Weight:65.9g
Chemical Formula:
SiO2
*Crystal is a mineral belonging to the quartz and it is called as a Crystal in case of clear stone especially. Almost composed of the SiO2 of 100%.
Black Tourmaline
Tumble
30x25x11mm Weight:21.4g
Chemical Formula:
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
*Tourmaline has a property of having a static electricity by heat, pressure, moisture. Gives out minus ion, infrared rays, too.

Sapphire Pebble
(Kanchanaburi, Thailand)
Chemical Formula:
Al2O3
*Sapphire and Ruby belong to the mineral called corundum. In corundum, they are all called as Sapphire in case of the tone of color except for the red.
Peridot Pebble 101ct
(Arizona, USA)
Chemical Formula:
(Mg,Fe)2SiO4
*Peridot belongs to the group in Olivine and it is also called as evening emerald because of glitters at dark place.
Ruby Pebble 8ct
Chemical Formula: Al2O3
*Calls red corundum at least Ruby. Incidentally, pink color is Pink Sapphire.
Assortment of the Tumbles 224g *1
Bought at
Museum of Natural History
Click Here !
Ametrine Ball (Brazil)
Diameter:55mm Weight:234g
*Ametrine is a mixed stone by Amethyst and Citrine. Amazingly beautiful and mysterious color is very attractive.
Rutilated Quartz Point
40(H)x26mm(D) 28g
(Bahia, Brazil)
*Rutilated Quartz includes the crystals like a needle having a red or gold rutile into own.
Rose Quartz Point (Brazil)
48(H)x34(D)mm 71.7g
Chemical Formula: SiO2

*Rose Quartz is one of the group in Quartz. There are various colors from pink to lilac pink. This cause is by the few oxidation metal (titanium oxide or oxidized iron) included into crystal.
Amethyst Point (Brazil)
42(H)x20(D)mm 34.2g
Chemical Formula:
SiO2
*Though Amethyst was clear crystal originally, that color center has been discolored to violet that changed an atom structure (Radiates one electron of oxygen combined with few iron) with by natural radioactivity in long time. Incidentally, it'll fade to go back to original atom shape when be irradiated by an ultraviolet rays.
Tourmaline Pebble 23ct
(Brazil)
Chemical Formula: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
*Presented by J.STELLA.
Everybody can be understood soon by seeing the pebbles above.  And you know Tourmaline's color variety is known widely.
Rainbow Flourite Point
50(H)x20(D) 44.2g
Chemical Formula:
CaF2
*Left picture was taken by the sun and right picture is by UV.
Sugilite Tumble
(N'Chwaning, South Africa)
28x22mm 13g
Chemical Formula:
KNa2(Fe2+,Mn2+,Al)2Li3Si12O30
*Recently this gemstone is in the limelight so much as a healing-stone. This gemstone was named in 1977 from what was discovered at Iwaki island, Ehime in Japan by Sugi Kenichi who is a petrologist for the first time. Well, though the Sugilite in original mine is yellow green, the color of South African one is vivid purple or red purple because of including few manganese and those are processed to the gems.
Larimar Tumble
(Dominica)
25x20mm 7.0g
Chemical Formula:
NaCa2Si3O8(OH)
*Larimar is a trade name and formal mineral name is Pectolite. In the power stone, Larimar is located as "Symbol of the Love and Peace" and it is called "New Age Stone" alike to Sugilite. Mined at a small volcano island (Dominica) floating on the Caribbean Sea. It is a fascinating gem with beautiful color that remind the Caribbean Sea.
Hauynite Pebble
10 pieces 1.5mm-2mm
(Niedermendig, Eifel, Germany)
Chemical Formula:
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
*Hauynite (Also called as Hauy) being a gem which was named from "R.J.Hauy" of German mineralogist has been known as mineral composing the Lapis lazuli. However, the mine for its simple substance is limited only in a part area of Germany and it is very rare and precious gem having a beautiful brilliancy with cobalt blue.
Sapphire Pebble 72ct
Chemical Formula:
Al2O3
*Presented by J.STELLA. Orange Sapphires and Green Sapphires are full.
Prehnite Tumble
30mm 13g
Chemical Formula:
Ca2Al(AlSi3O10)(OH)2
*The history of name is what was found by "Hendrik von Prehn" who is Dutch army colonel, and was named by A.G.Werner who is a mineralogist in 1789. This stone is mined as an aggregate of grape shape mostly, and named also "Budou-ishi" (grape-stone) in Japanese because of being green like a muscat.
Ruby Pebble 32ct
(Mogok, Myanmar)
Chemical Formula: Al2O3
*Both a ruby and a sapphire become red rubies by the chromium element of a small quantity being contained in this though it is the crystal of the corundum which consists of the same aluminum oxide (alumina).
(Presented by J.STELLA)
Emerald Pebble 17ct
(Colombia)
Chemical Formula: Be3Al2Si6O18
*It is the Colombian emerald where green brightness is beautiful. This is presented by Sri Lanka Jewels The front row is loose gem of white topaz.
Botswana Agate Tumble
(Botswana)
25x18x13mm 5.9g
Chemical Formula:
SiO2
*This name was from being mined at African Botswana (the famous place of production of the diamond). It is a kind of the agate that striped pattern is very neat. It is also called "Tengan Seki" (the sky eye stone) in Japanese name.
Ruby & Sapphire Pebble 17ct
Chemical Formula:
Al2O3
*These are pebble of the Rubys and Green Sapphires.
Presented by Nishio for "Diva's Forest" (July end closing, 2004). Thank you very much in the mineral collection.
Ulexite
(California, USA)
47x21x9mm Weight:17.3g
Chemical Formula:
NaCaBO9・8H2O
*Ulexite is seemingly the mineral which isn't transparent, but when it is seen from a certain direction, it is the strange stone that it seems to be transparency. Moreover, it seems that a character floats when it looks through the ulexite from the top of the character and it is seen.. This stone is the mineral which contains boron of Ulexite, and much is discovered in salt Lake of the dryness area of the west coast in North America. The name is based on the discoverer's German chemist Ulex.
(Presented by J.STELLA)
Rainbow Quartz Point
(Brazil)
55x50x49mm 134g
Chemical Formula:
SiO2
*The part of the inclusion who has a surface like a thin mirror reflects light, and it is called rainbow crystal from shining to the rainbow color.
Lapis lazuli
37x34x21mm 36.3g
(Afghanistan)
Chemical Formula:
(Na,Ca)8(S,SO4,Cl)2(Al6Si6O24)
*It is the lapis lazuli whose vivid lazuli color is beautiful.
Malachite
51x59x35mm 136g
(Africa)
Chemical Formula:
Cu2(CO3)(OH)2
*Called as a sister of Azurite, because mostly mined with Azurite. Main ingredient is a copper oxide and a carbon dioxide and this is same to the verdigris in the surface of copper. Malachite was used also as the colors to make up in long histories. It is said an eye shadow for Cleopatra was a powder of Malachite.
Jadeite
55x47x18mm 56.8g
(Myanmar)
Chemical Formula:
NaAlSi2O6
*Main mine area for jadeite is Myanmar, and the stone of green which is near to the transparency is very expensive. Incidentally Jadeite is also mined at Itoigawa, Nhigata in Japan.

*1 The content of tumbles is as follows (conjecture) :
Crystal, Citrine, Carnelian,, Aventurine, Amethyst, Pink Agate,
Rose Quarz, Purple Flourite, Peach Quarz, Blue Agate, Etc.,


Gemstone / Mineral / Fossil

Amethyst Big Cluster
(Brazil)
270x320x180mm 13.6kg
Chemical Formula:
SiO2
*Bought at a souvenir shop in Kyosyu island because I was charmed by its beauty and shape. I cannot lift this with only me because of being so heavy. Though this scale is very expensive usually, could buy with low price so much than the market price.
Amethyst Mini Cluster
(Uruguay)
38x35x32mm 54g
Chemical Formula:
SiO2
*Amethyst mined from Uruguay is known as deep violet color.
Pyrite 46.5g
Chemical Formula: FeS2
*This is a typical mineral in the sulfuration mineral. Composed of iron and sulfur. Alias is "Gold of a fool" because of having a luster like a brass or gold. Pyrite was named from "Pyr" that shows a Greek flame a spark scatters when it is struck by a hammer.
Galena Crystal
36x23x15mm 61g
(Elmwood mine, Smith Co., - Tennessee, USA)
Chemical Formula:
PbS
*This is a sulfuration mineral of the lead, and it is main mineral of the lead.

Emerald Gemstones (beryl)
About 1.8x1.5mm * 2P / 9.7g
Chemical Formula:
Be3Al2Si6O18
*Ererald belongs to the beryl. Delicate jewel which is cracked or scratched easily because of having many inclusions. However dyed with vivid green by chromium inserted into the crystal in this inclusions.
Crystal Mini Cluster
40x36x22mm 19g
(Brazil)
Chemical Formula: SiO2
*It is used for a quartz watch because of having a special property of constant vibration. Also transforms into silvery material when it'll be refined to silicon, and it is used as the raw materials for semiconductor. Thus crystal is a stone having various power.
Azurite
48x23x13mm 27g

(Arizona, USA)
Chemical Formula:
Cu3(OH)2(CO3)2
*Azurite is quarried at the bottom of copper mine. It has a vivid deep blue color and they are used as the rock colors. Many Azurites are coexistenting with the Malachites, Azurites may be changed to Malachite.
Natural Blue Topaz
32x20x13mm 12g
(Padre Paraiso, Minas Gerais, Brazil)
Chemical Formula:
Al2SiO4(F,OH)2
*Recently almost Blue Topaze as a jewel in the market is a treatment stone which is changed to the deep color by radioactivity.

Herkimaer Diamond (crystal)
16x11x9mm 1.9g
(Herkimaer, New York)
Chemical Formula:
SiO2
*Very precious crystal is mined at only the Herkimer district in State of New York. Its transparency is high quality and brilliant in the gemstone. It is keeping a shape of the sharp both ends with 18 surface crystal, so this name was named because the shape is like an octahedron crystal of diamond. Herkimer Diamond grows inside the small cave of the dolomite lime stone through several million years.
Flour Apatite
21x13mm 5.2g
(Cerro De Mercado, Durango, Mexico)
Chemical Formula: Ca5(PO4)3F
*A kind of apatite which is composed of phosphorus and calcium. It has the luster like a clear glass, and hexagonal cylinder is crystallized.
Stibnite
70mm 64.6g
Chemical Formula: Sb2S3
*A mineral of antimony which belongs to the sulfuration mineral. Though its unique metallic shape is so beautiful, it is very soft and fragile stone having "2" of Mohs hardness. And the silvery surface will be changed into black color to be exposed by the air during long time.
Aquamarine (beryl) Crystal
10.5x15.5x5.5mm 1.682g
(Mogok, Myanmar)
Chemical Formula: Be3Al2Si6O18
*Belongs to the beryl and includes few iron. This is a familiar stone for promising a safety of sailing since old times.

Amber
41x31.5x11mm 6.966g
(The Coast of Baltic Sea)
Chemical Formula: C40H64O4
*Amber is a thing which is a resin of ancient tree buried by the earth and sand and fossilized. What included insect is existing, too. Main mine is Baltic sea coast, and also Dominica, Myanmar, Rumania, Italy and Japan (Kuji). Amber has the nature which becomes soft in 150 degree when it is heated and dissolves in 300 degree from 250, so it can be circulated as a regeneration amber (Ambroid), too.
Pyrite Cluster
54x40x41mm 138g
Chemical Formula:
FeS2
*Has a weightiness and gold metallic color.
Tanzanite Gemstone
10x7x6mm 0.9g
(Umba Valley, Arusha, Tanzania)
Chemical Formula:
Ca2Al3(Si2O7)(SiO4)O(OH)
*One of mineral in Zoisite. Though gemstone is no clear and bluish purple, changes into the clear bluish purple when heating this. A factor of bluish purple is consist of few vanadium. Tanzanite was found by Manuel Do Sousa who is local tailor at Tanganyika, Tanzania in 1976. After that, it was sent via various people, and Tiffany, inc. names "Tanzanite" from mine place. In result, this jewel is known around the world.
Desert Rose (Rose Selenite)
30x25x20mm 11.9g
(Mexico)
*Desert Roses(or Sand Rose) are a Gypsum type (CaSO42H2O) and a Barite type (BaSO4). A picture above is a Gypsum type. Can be found at the place being oasis before. This is made by the minerals in water when it is drying and crystallized.
Lapis lazuli Gemstone
27x21x13mm 8g
(Afghanistan)
Chemical Formula:
(Na,Ca)8(S,SO4,Cl)2(Al6Si6O24)
*The mineral name for Lapis lazuli is Lazulite. A cause of blue color is by Sulfur. If it has many existing, joins into iron and makes the Pyrite. A part of gold color is Pyrite. A part of white color is Calcite. Especially including a Pyrite is so popular. And, Lapis Lazuli is an aggregate with other several minerals, Lazurite, Sodalite, Hauynite, Noselite. Besides, Lapis lazuli is also used as indigo blueish lock colors for a long time.
Spessartite Garnet
23x17x9mm 5.2g
(Pakistan)
Chemical Formula: Ca3Al2(SiO4)3
*It is very vivid beautiful crystal. The etymology is from Spesart district (Current Munchen) in West German State of Bavarian (Called Bavaria, too).
Spodumene (Kunzite)
60x25x16mm 25g
(Urucum Mine, Brazil)
Chemical Formula:
LiAlSi2O6
*Spodumene is used as an absorbent oxygen medicine, a battery and so on. The colors are green, lilac, gray, white, etc., so the green is called as Hiddenite and the lilac is called as Kunzite. Clear and high quality stone is cut for the jewel. A picture above is Kunzite having beautiful lilac pink which is a jewel quality. The main ingredients are Lithium, Aluminum silicate. G.F.Kunz who is a mineralogist discovered it in 1902.
Arsenopyrite
33x31mm 40g
(Yao Gan Xian, Hunan, China)
Chemical Formula:
FeAsS
*A mineral of silvery metallic color is very impressive. However! Such as beautiful rose having a thorn... Arsenopyrite is used as a material for arsenic (poison) as much orpiment and realgar. Mispickel becomes the main raw material of the arsenic with male yellow, the comb stone, and so on.
Celestine Cluster
110x60mm 492g
(Madagascar)
Chemical Formula:
SrSO4
*The sulfate mineral of the strontium. Though sky blue stone is mined so much, clear or white stones are also existing. The celestite that is growing gregariously as a crystal inside the globular rock is mined at Madagascar, and this is becoming so popular mineral. This celestite is my favorite, because very beautiful and high quality.
Imperial Topaz
20x5.75x5.0mm 1.7g
(Brazil)
Chemical Formula:
Al2SiO3(OH)2
*The Imperial Topaz being a light brown color which is mined at the neighborhood in Ouro Preto, Minas Gerais, Brazil is known as the jewel of best class in the Topaz having various colors. Topaz has two types. First, it is F-Type(Fluorine) which is mined so much in the world. Next, it is OH-Type(Hydroxyl). Imperial Topaz belongs to this OH-Type.
Larimar Gemstone
27x38.5x28mm 38g
(Barahona, Santo Domingo, Dominica)
Chemical Formula: NaCa2Si3O8(OH)
*Larimar (Pectolite) is mined at only the place around Baoruco village, Dominica. Discovered by Norman Lilling who is American geologist in 1974. An etymology is from "Lari" of "Larisa" as the name of jewel dealer's daughter at Jamaica being the mine spot, and "Mar"(sea) in Spanish.
Dioptase Crystal
39x29mm 28g
(Altyn-Tyube, Kazakhstan)
Chemical Formula: CuSiO2(OH)2
*Dioptase is a transparent green mineral and it was presented in old days to the Russian emperor because it mistook it for emerald when first discovered in Kazakhstan. The etymology is from Greek being meaning of "looks to be transparent". Incidentally, the matrix of this specimen seems Calsite.
Green Apophyllite
60x45x35mm 63.3g
(Lawry, Maharashtra, India)
Chemical Formula: KCa4(Si4O10)2(F,OH)8H2O
*Green Apophyllite is a new type's Apophyllite found in India on 2001. Mining is very rare, so it's very expensive. This sample has been bought from Indian dealer at "10th Exhibition of the Big Discovery for Mystic Stones" in Osaka held from 1 March 2004.
Pink Calcite
68x27x18mm 62.8g
(Nuevo, Leon, Mexico)
Chemical Formula:
CaCO3
*Calcite looks with double when seeing the character and so on through it. About the colors, pure one is colorless, becomes a yellow when including an iron, and becomes a pink when including a manganese. Otherwise, there are gray, green and blue. And it is known it shines when irradiated by UV. Above is taken photo by the sun, and below is by UV.
Agate
25x47x24mm 26.8g
Chemical Formula:
SiO2
*Agate is one gathered with the micro crystal of quartz. It is one including the water, too. The agate of white and black is called as Onix or Cameo, and be used as the material of sculpture. The agate of red and white is called as Sardonix, and it is one of August birth stone.
Artificial Silicon (USA)
49x38x39mm 76.1g
Chemical Formula:
Si
*Only silicon was refined artificially in the high purity from silicon sands and so on. This becomes the raw material of the semiconductor.
Natural Sulfur
35x30x50mm 25.2g
(El Desierto, Uyuni, Bolivia)
Chemical Formula:
S
*Sulfur is produced so much in the volcanic area. It exists variously in the sulfide and sulfate in the mineral as well.
Golden Beryl Crystal
16.4x4.7x3.0mm 0.5g
(Tajikistan, Rusia)
Chemical Formula: Be3Al2Si6O18
*Golden Beryl is the group of the same mineral (Beryl) as the emerald aquamarine, and Beryl who specially makes yellow a basis is called as Heliodor or Golden Beryl. Mainly the cause of yellow coloring is the influence of the iron. As for Beryl, it is characteristics to form a hexagon pillar-shaped crystal like this. Generally, pale-blue aquamarine is made by heat treatment in this crystal.
Wine-Red Color Flourite
69x59mm 175g
(Navidad mine, Durango, Mexico)
Chemical Formula:
CaF2
*This is a cute wine red color's Flourite from Mexico.
Brazilianite Crystal
16x7mm 0.9g
(Near Conselheira Pena, Minas Gerais, Brazil)
Chemical Formula:
NaAl3(PO4)2(OH)4
*This is a rare Brazilian mineral authorized as a new jewel in 1945.
Pink Sapphire Crystal
9x4mm 1.903ct
(Kolone Mine, Sri Lanka)
Chemical Formula:
Al2O3
*Presented by Sri Lanka Jewels (Right samples are the same, too). This one was collected from a matrix at Kolone mine which has been closed already. Thus it's rare one.
Corundum Crystal
9.5x4.2mm 1.277ct
(Sri Lanka)
Chemical Formula: Al2O3
*This one is a crystal of sapphire having a little of (^^;) the orange color of "Padparacha" that is famous phantom gem in Sri Lanka. This sample seems to be not a Bicolor Sapphire and it belongs to the category of a Party-Colored Sapphire because of dispersed yellow. Well, though the gem with vivid pink orange in the market is called as Padparacha currently, this is a colored pottery's stone that is heated artificially and it has almost no worth. I think we seldom meet with real Padparacha.
Sapphire Crystal
7.5x3.2mm 0.444ct
(Sri Lanka)
Chemical Formula:
Al2O3
*This is a crystal of the Sapphire mined from Sli Lanka. It's so rare sample.
Rhodochrosite Crystal
25x17mm 15g
(Argentina)
Chemical Formula: MnCO3
*Rhodochrosite is called as the Inca Rose because it is mined so much at South America. The shape of mineral is sometimes composed of the lozenge crystal of six surfaces. But, many cases are mined with a bean-shaped or a limestone-cave-shaped.
Natural Boulder Opal
18.43x18.25x11.07mm 20.261ct
(Queensland, Australia)
Chemical Formula:
SiO2・nH2O
*Opal with the mother rock of ironstone mined from Queensland located in Australian northeastern area is called as Boulder Opal. This one is polished from ore, and the effect of the play of color can be confirmed.
Blue Opal
26x21x10mm 4.1g
(Peru)
Chemical Formula:
SiO2・nH2O
*Opal is a silica mineral which has added the water (3-10% in weight) into silicon dioxide (SiO2). It is amorphous exceptionally as mineral because of being generated by low temperature. Blue Opal hasn't so-called the play of color. However it is a beautiful gem with milky sky blue color.
Mexico Opal
50x44x21mm 50g (Mexico)
Chemical Formula: SiO2・nH2O
*Mexico Opal had been created into the volcanic lava. It is considering that the lava became solid once and Opal was created by the hot water including silicic acid gradually. Mainly mined at the area in Magdalena, Jalisco. In this Cantera Opal (Opal with Mother Rock), you can see the beautiful play of color with the orange, yellow and green.
Emerald Crystals (beryl)
About 8x6mm (1.60ct x 2)
(Colombia)
Chemical Formula:
Be3Al2Si6O18
*The gem which that Cleopatra loved blindly is an emerald. Though a Cleopatra mine being many emeralds were produced in the ancient times in Egypt has already been closed, After that, discovered by Pizarro who is Spanish conqueror in Colombia. Colombia is the mine place of the highest-quality emerald in the world, and the amount of production is best in the world at present, too.
Spinel 20.5ct
(Mogok, Myanmar)
Chemical Formula:
MgAl2O4
*The name of Spinel was named from the reason what is the pair crystal shape like the two pyramids piled up seemed to be such as a spine. Spinel is the mineral that magnesium and aluminum oxidize, and it is usually mined with the corundum. Main producing district is the district in Mogok, Myanmar that is famous as the place of production for Ruby and Sapphire. The colors of Spinel are various so much and there are red, blue, purple, yellow, colorless, black, and so on. As for Blue Spinel, Sri Lanka and Tanzania are main mine places.
(Presented by J.STELLA)
Blue Sapphire Gemstone
13x8x7mm / 6ct
(Sri Lanka)
Chemical Formula:
Al2O3
*It is a gemstone of high-quality blue sapphire which has brilliant blue and beautiful gloss.
Flourite
29.15x27.5x17.5mm 15g
(Yao Gan Xian, Hunan, China)
Chemical Formula:
CaF2
*The shape that a purple color and perfect cubic crystal overlapped each other tells us the excellence of the natural molding beauty exactly.
Emerald Cluster
53x42x28mm 60g
(Colombia)
Chemical Formula:
Be3Al2Si6O18
*This one is an Emerald gemstone of the big size. Green of the Emerald is the color of gentle healing in the eyes.
Zincite
13x19x14.75mm 7.376g
(Nigeria)
Chemical Formula:
ZnO
*Zincite is a mineral with red hexagonal crystal. As for this specimen, the crystals of an orange color like a flame are intertwining complicatedly each other. When ultraviolet rays are irradiated, it is known that light is sent out, too.
Peridot Crystal
9x6mm / 0.57g
(Pakistan)
Chemical Formula:
(Mg,Fe)2SiO4
*It is the hexagon pillar-shaped crystal peridot which looks like a crystal of the emerald.
(Presented by J.STELLA)
Natural Zircon Crystal
Diameter:16mm / 2.7g
(Australia)
Chemical Formula:
ZrSiO4
*The zirconium (Zr) which was one of the main elements which compose Zircon was discovered from the result of the chemical analysis of Zircon. In the gem's world, it has been used as a substitution stone of the diamond because of the high refractive index and the character of that strong brightness with zircon. At present, the cubic zirconia generally being used as an imitation of the diamond is the synthesis stone created from the zirconium (Zr) and the yttrium (Y).
Green Mica
26.5x21x8mm 6.756g
(Mogok, Myanmar)
Chemical Formula:
K(Mg,Fe)3(AlSi3O10)(OH,F)2
*Mica is one of the silicic acid salt minerals which made potassium the chief ingredient. The name of Mica is based on Latin "micare" (meaning of shining) from the strong luster. The crystal structure of the mica is a layer-shaped like a sandwich, and has the nature which comes off thinly and easily. What much magnesium contains in the mica is called green mica.
Tsavorite
15x14x9mm / 3.2g
(Tanzania)
Chemical Formula:
Ca3Al2Si3O12
*Tsavorite is a kind of grossular (garnet), and another name is green garnet. Beautiful green is coloring by the vanadium and the iron. The origin of the name depends on having been discovered in Tavo animal park of Kenya located in the east of Kilimanjaro which is the African highest peak in 1975. But, present main producing district has changed to Tanzania.
Ruby Crystal
14.0x23.0x12.0mm / 4.936g
(Mogok, Myanmar)
Chemical Formula: Al2O3
*Though it is strange shape, it is the crystal of the ruby whose lustrous pink is beautiful.
Ruby in Calcite
17x20x14.5mm / 11.2g
(Mogok, Myanmar)
Chemical Formula: Al2O3 / CaCO3
*They are the ruby of lustrous pin quiche red and the superb article whose contrast of the matrix of white calcite is beautiful.
Hauynite
2.5x3.5x4.15mm 0.054g
(Germany)
Chemical Formula:
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
*This is a rough stone for the jewelry cut of precious Hauynite. The impact of vivid blue is conveyed to us.
Kunzite Crystal (Spodumene)
12.5x26.5x57.0mm 40g
(Pakistan)
Chemical Formula:
LiAlSi2O6
*It is beautiful Kunzite (Spodumene) with the color and a feeling of the transparency though regrettably that shape at the end is not perfect. Kunzite has the nature of vertical cleavage along streak, it seems to be un-transparency (pink) when you see from the streak direction and it seems to be transparency when you see from the horizontal angle.
Ruby in Zoisite
37x31mm / 44g
(Tanzania)
*They are a ruby and the aggregate ore of Zoisite. As for the mineral of Zoisite, this blue one is called as Blue Zoisite, that is, Tanzanite.
Grossular Garnet
23x21mm / 18g
(Sierra De Las Cruces Coahuila, Mexico)
Chemical Formula:
Ca3Al2(SiO4)3
*The origin of that name of "Grossular" is a shape by that light green crystal seemed to be "Grossularia" being a kind of Gooseberry when it was discovered by a Siberian coal miner at the beginning of the 19th century. As for the pure crystal, an oblique dodecahedron is standard. Then, when iron increases, the surfaces of the crystal increase to 24 surfaces body.
Citrine Cluster
(Brazil)
55x42mm / 125.8g
Chemical Formula:
SiO2
*This one is an amethyst processed by heat treatment. Another name is Citrine Topaz.
Danburite
30x10mm / 4.4g
(San Luis Potosi, Mexico)
Chemical Formula:
Ca8B2Si2O8
*Danburite was used as an imitation of the diamond because the refractive index of it was high and clear and it had beautiful luster. The name is from Danbury of State of U.S. Connecticut of the discovery place. Obira Mine in Ooita Prefecture and Toroku Mine in Miyazaki Prefecture (Both mountains had closed) are famous in the place of production in Japan.
Spinel in Calcite
41.2x26.1x46.8mm / 42.0g
(Mogok, Myanmar)
Chemical Formula: MgAl2O4 / CaCO3
*This is an amazing red color. Vivid red which looks like a pigeon's blood in the ruby is beautiful.
Kyanite
58x13x4mm / 10g
(Kachin, Myanmar)
Chemical Formula:
Al2SiO5
*The name of kyanite is from Greek "Kyanos" (blue). It is known by having two hardness (4-5/5-7.5) according to the difference in the direction of the crystal axis.
Green Kyanite
50x17x10mm / 28g
(Minas Gerais, Brazil)
Chemical Formula:
Al2SiO5
*This kyanite is a rare crystal that a body-color is light green.
Tanzanite Crystal
9.15x8.15x15.15mm / 2.794g
(Merelani, Arusha, Tanzania)
Chemical Formula:
Ca2Al3(Si2O7)(SiO4)O(OH)
*It is the crystal of Tanzanite which became valuable articles now. Violet blue with a feeling of the transparency is so beautiful.
Tsavorite / Zoisite
22x14x13mm / 7.02g
(Tanzania)
Chemical Formula:
Ca3Al2Si3O12
*Vivid green of Tsavorite is a charm. Tanzanite of faint lavender color is mixed, too.
Sphene Crystal
13.5x7.5x20.0mm / 4.324g
(Republic of Mali)
Chemical Formula:
CaTiSiO5
*Formal name is a Titanite. It is mineral with main ingredient of Titanium and be changed to the various colors due to including a Manganese and Chromium. Especially the stones which includes yellow and green are processed to beautiful gem. Also it's a rare stone and expensive. Incidentally the name of Sphene was named from Greek "wedge" as a typical crystal shape in this mineral.
Red Beryl Crystals (beryl) - 2 pieces
0.832ct / About 6.0x4.7mm
0.274ct / About 4.3x2.3mm
(Thomas Range, Utah, U.S.A.)
Chemical Formula:
Be3Al2Si6O18
*This one is the gemstone of "Red Beryl" being super rare gem. Another name is "Bixbite". That production has stopped at present because that company went bankrupt without a profit suitable though there was only one place where Red Beryl of quality of a jewel was mined in the world and it was the mine that existed at Utah Wah Wah Mountains in USA. Getting the Red Beryl is less than 1ct from the rock of 1 ton and those sizes were almost small less than 0.2ct. Red Beryl is one of the very rare jewel in the every jewel, and by such a circumstance, the high-quality one deals in it with a high price more than a diamond in the market.
Tourmaline Crystal
14x14.5x10.5mm / 4.2g
Chemical Formula:
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
(Brazil)
*This one is the crystal of a water melon type that outer mint green and the contrast of central Acroite are beautiful.
Paraiba Tourmaline
Length: 3.0cm / 9g
Chemical Formula:
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
(The State of Paraiba, Brazil)
*As for this specimen, the outside is Paraiba and the inside is Pink Tourmaline. Paraiba Tourmaline is the jewel of the new kind that was discovered at the State of Paraiba, Brazil in the 1980's. This tourmaline is known as the shining by brilliant neon blue. Currently a cut stone is dealed as a very high-class jewel at a high price. Incidentally, this Paraiba Tourmaline has drained up already and can't mine at Paraiba.
Vanadinite
34x15x46mm / 45g
(Morocco)
Chemical Formula:
Pb5(VO4)Cl
*Vanadinite is the beautiful mineral which makes vanadium the main ingredient. You have to need an attention for handling because the hardness is soft with "2.5-3".
Cavansite
10x15mm / 1.5g
(Poona, India)
Chemical Formula:
Ca(V4+O)Si4O10・4H2O
*They are the mineral mined with Tuff and so on such as Pentagonite of the same chemical formation at the same time. Deep blue is a thing due to the action of the vanadium which is this mineral chief ingredient. Cavansite is the comparatively new mineral that was announced on this name in 1973, and it was named to be connected with the initial of Calcium, Vanadium and Silicone.
Diamond Gemstone
6.7×5.5×3.1mm / 1ct
(Democratic Republic of Congo, Africa)
Chemical Formula:
C
*Diamond is a mineral made of carbon crystallized in an isometric arrangement, and be most hard material in the earth (Mohs scale 10). An ancient age, it is the mineral that was formed near 160km under the ground and was carried onto the ground by eruption of volcano. Australia, Africa, Russia and so on are primal mine lately. And, Garnet and Spinel are not composed with carbon though the crystal shape looks alike because they are the same jewels of the crystallized in an isometric arrangement as the diamond, too.
Native Gold (Nugget)
9.4x5.8x1.8mm / 3.0ct
(The State of Victoria, Australia)
Chemical Formula:
Au
*As for the Gold, it may be able to be mined such as this specimen as a nugget, though it is mainly mined as the gold dust. Gold has the highest conductive electric rate, and it's shining forever because very strong to the oxidization. It has also a characteristic that can be pressed with thin, and it can be extended. It can be extended to 3km per 1g of pure gold. Main producing districts of Gold are South Africa, America, Russia, Australia, Canada, and so on.
Natural Taaffeite Gemstone
4.55x2.76x2.45mm / 0.226cts
(Sri Lanka)
Chemical Formula:
BeMg3Al8O16
*Taaffeite is the jewel discovered by Irish Taaffe, earl and it is the super rare gem which represents Sri Lanka where it has been recorded on the Guinness as well. According to one opinion, it is said that only about several thousand has been found in the world yet. Though an appearance looks like Spinel, Spinel is single refraction and Taaffeite becomes birefringence. This specimen is Taaffeite gemstone of gem quality with un-grinding.
Peridot Crystal
10.0x9.15x21.0mm / 4.098g
(Mogok, Myanmar)
Chemical Formula:
(Mg,Fe)2SiO4
*This is a crystal of Peridot from Myanmar which is vivid beautiful olive green.
Blach Opal
13x11x6mm / 4.10ct
(Lightning Ridge, Australia)
Chemical Formula: SiO2・nH2O
*It is a beautiful black opal from Lightning Rich that a pure feeling of the transparency is the characteristics. However..., I guess it is a crystal opal as for the category...
Ammolite (Ammonite)
22.2x13.0mm / 2.6g (Left Side)
(Canada)
Chemical Formula: CaCO3
*Ammolite is the jewel which was born of the fossil from the ammonite that died out 7,000 years ago. It is the rare jewel which can be mined only at Canadian Alberta.
Hiddenite Crystal (Spodumene)
36.7x10.2x9.0mm 8g
(Pakistan)
Chemical Formula:
LiAlSi2O6
*This is a Hiddenite having the termination that took on faint green.
Morganite (beryl)
30x23x15mm 13.6g
(Pakistan)
Chemical Formula:
Be3Al2Si6O18
*Morganite is the Beryl as well as an emerald and aquamarine, and coloring of the pink color is based on the manganese..
Emerald Crystals (beryl)
7x6x5mm / 0.3g
(Muzo , Colombia)
Chemical Formula:
Be3Al2Si6O18
*It is Muzo's emerald whose color of bluish green is beautiful.
Pyromorphite
24x20x150mm / 7.9g
(China)
Chemical Formula:
Pb5(PO4)3Cl
*It is the mineral that light green and shape are attractive.
Natural Pink Topaz
9x8x9mm 1.5g
(Brazil)
Chemical Formula:
Al2SiO4(F,OH)2
*Tentatively, though it is the indication of natural, generally pink topaz is made from the dark-brown topaz by the heat treatment.
Apatite
3 pieces / 0.8g
(Madagascar)
Chemical Formula: Ca5(PO4)3(F,OH,Cl)
*It is the apatite whose twinkle of neon blue is beautiful.
(Presented by J.STELLA)
Apatite
4.3x3.4x9.1mm / 0.25g
(Madagascar)
Chemical Formula: Ca5(PO4)3(F,OH,Cl)
*It is the apatite of the beautiful loyal blue.
Amazonite
10x12x0.7mm / 1.2g
(Florida, USA)
Chemical Formula: KAlSi3O8
*Amazonite is the stone which has the beautiful color of the blue sky or blue green by one of the stones of Microcline. The origin of the name is based on the stone collected in Amazon River basin which looks alike well.
Tsavorite
22x23x21mm / 15.4g
(Melelani, Tanzania)
Chemical Formula:
Ca3Al2Si3O12
*An emerald green with a feeling of the transparency is very attractive. Big size and good shape is a charm.


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Loose (Gem, Precious Stone - Part I)

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