Formula Albite: Na[AlSi3O8]
Albiet, Albiit, Albiitti, Albit, Albita, Albitas, Albīts, Albitt, Альбит, 曹長石, אלביט, 钠长石 Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.6 - 2.65 Refractive index: 1.528 - 1.537 Cleavage: different Colors: white, grey, blueish, greenish, reddish Luster: vitreous, pearly on cleavages Transparency: transparent, translucent Fluorescence: - Pleochroism: - Largest Albite crystal: 3 cm? Deposits: worldwide Discovery: 1815 1st description: 1892 Name: from the Latin word "albus" (white) |
Albite Mineral
Size: 2.4 x 1.7 x 1.1 cm Origin: Chisone Valley / Torino Prov. / Piedmont / Italy Photo by kind permission of © www.irocks.com |
Albite Mineral
Size of the crystal: 1.5 x 1.0 x 0.4 cm Origin: San Piero in Campo / Elba / Prov. Livorno / Tuscany / Italy Photo by kind permission of © Sarah Sudcowsky |
Albite Mineral
Size of the crystal: 3 mm Origin: Simpson Quarry / South Glastonbury / Hartford County / Connecticut / USA Photo by kind permission of © Peter Cristofono |
Albite Cat's Eye
Weight: 2.99 ct Origin: Sakangyi Pegmatite / W of Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Formula Amazonite: K[AlSi3O8]
Amasoniit, Amazoniet, Amazonit, Amazonita, Amazonitas, Amazonsten, Амазонит, 天河石手串, 天河石 Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.56 - 2.58 Refractive index: 1.522 - 1.530 Colors: colorless, white, greenish, blue Fluorescence: slightly greenish Pleochroism: - Largest faceted Amazonite: 53 ct Deposits: Brazil, India, Japan, Madagascar, Namibia, Russia, USA, Vietnam Name: from the Amazon river in Brazil |
Amazonite
Size: 0.45 x 0.39 cm Weight: 0.22 ct Origin: Vietnam Photo by kind permission of © Darlene Cobler |
Amazonite Mineral
Size: 3.2 x 2.6 x 2.5 cm Origin: Tanokamiyama / Omi Prov. / Japan Photo by kind permission of © www.irocks.com |
Amazonite Mineral
Origin: Tree Root Pocket / Two Point Claim / Teller County / Colorado / USA Photo by kind permission of © www.exceptionalminerals.com |
Amazonite
Weight: 27.35 ct Origin: Santo / Minas Gerais / Brasilien Photo by kind permission of © www.gemfrance.com |
Amazonite Mineral
Size: 4.9 x 4.0 x 3.7 cm Origin: Amar Hills / Konso / Sidamo Prov. / Ethiopia Photo by kind permission of © www.kristallplanet.de |
Amazonite Mineral
Size: 4.0 x 3.4 x 2.2 cm Origin: Lake George Area / Park County / Colorado / USA Photo by kind permission of © www.minclassics.com |
Amazonite Mineral
Size: 8.3 x 6.9 x 3.3 cm Origin: Wenshan / Yunnan / China Photo by kind permission of © www.irocks.com |
Amazonite Mineral
Size: 1.49 x 1.24 x 1.10 cm Origin: Sakangyi Area / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Amazonite Cat's Eye
Size: 1.3 x 0.7 x 0.3 cm Weight: 2 ct Origin: Crystal Peak Area / Teller County / Colorado / USA Photo by kind permission of © www.lucianabarbosa.com |
Formula Andesine: (Na,Ca)(Si,Al)4O8
Andesien, Andesin, Andesina, Andezin, Andezinas, Andezīns, Andezyn, Андезин, אנדסין, 안데신, 中長石, 中性長石 Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.61 - 2.76 Refractive index: 1.543 - 1.551 Cleavage: perfect - good Colors: colorless, white, grey, yellow-green, orange, red, blue ? Transparency: transparent - translucent Luster: vitreous - pearly Fluorescence: - Pleochroism: - Largest faceted andesine: 33.42 ct ? Deposits: worldwide 1st Description: 1892 Name: from the Andes Mountains in South America |
Andesine
Size: 1.2 x 1.2 x 0.9 cm Weight: 7.35 ct Origin: Congo ? Photo by kind permission of © www.kox-gems.com |
Andesine
Size: 0.51 cm Weight: 0.30 ct Origin: Inner Mongolia / China Photo by kind permission of © www.irocks.com |
Andesine Ring
Andesine: 0.8 x 0.8 cm; Congo ?; trilliant cut Other stones: yellow diamond, sapphires, rubies Gold: 18K yellow and red gold Photo by kind permission of © www.jeffreyappling.com |
Andesine Color change: Daylight: green
Size: 1.10 x 0.91 x 0.60 cm Weight: 3.57 ct Origin: Africa ? Photo by kind permission of © www.awesomegems.com |
Formula Bytownite: (Ca,Na)(Si,Al)4O8
Bitovnitas, Bütauniit, Bytowniet, Bytownit, Bytownita, Bytownity, Битовнит, בייטאוניט, 培長石, 바이토우나이트 Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.7 - 2.72 Refractive index: 1.563 - 1.583 Cleavage: different Colors: colorless, white, grey, yellowish, brown Transparency: transparent Luster: vitreous Fluorescence: - Pleochroism: - Largest Bytownite: 3 cm? Deposits: worldwide Discovery: 1835 1st Description: 1892 Name: from the former name "Bytown" for Ottawa / Canada |
Bytownite Mineral
Origin: Ottawa / Carleton County / Ontario / Canada Photo by kind permission of © António Manuel Ináçio Martins |
Bytownite
Size: 1.69 x 1.03 cm Weight: 7.73 ct Origin: Ethiopia Photo by kind permission of © www.edelsteine.at |
Hauyne is one of the rarest and most expensive gemstones, named after the French mineralogist
René Just Haüy (1743 - 1822).
Formula Hauyne: (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 Hauyn, Haüyn, Hauyniitti, Haüyn, Haüyne, Гаюїн, 藍方石 Mineral class: silicates Crystal system: isometric Mohs scale: 5 - 6 Density (g/cm3): 2.4 - 2.5 Refractive index: 1.494 - 1.510 Cleavage: distinct Colors: colorless, blue, green, yellowish? reddish? Color Sequence Luster: vitreous - resinous Fluorescence: LW: sometimes yellow-orange; SW: sometimes rose to orange Pleochroism: - Largest rough Hauyne: 89 ct, 3 cm? Largest faceted Hauyne: 7.5 ct Deposits: Eifel Mountains / Germany, Afghanistan, Armenia, Australia, Austria, Canada, China, Ecuador, France, Greenland, Guinea, Italy, Russia, Spain, Sweden, Tahiti, USA 1st Description: 1807 Name: in honor of the French mineralogist René-Just Haüy (1743-1822) History: Hauyne was discovered in 1807 by the French mineralogist R.J. Haüy (1743-1822) at the Monte Somma (Vesuv / Italy). First Description: Brunn-Neergard, 1807. "Early 1973 the semi precious stones cutter Philip Hobein from Kirschweiler near Idar Oberstein (Germany) found some blue crystals behind the restaurant "Laacher Mühle" *. These crystals called his interest. In his workshop he faceted these xenomorphic crystals. The result was the birth of a new precious stone of sapphire-blue color and very good transparency - the mineral Hauyne." (Source: www.geoberg.de) * "Laacher Mühle" is located near Mendig / Eifel Mountains / Germany. |
Hauyne Mineral
Origin: Eifel Mts. / Germany Photo by kind permission of © Kristina Waz |
Hauyne
Origin: Eifel Mts. / Germany Photo by kind permission of © Kristina Waz |
Hauyne
Size: 0.4 x 0.3 x 0.2 cm Weight: 0.13 ct Origin: Niedermendig / Eifel Mts. / Germany Photo by kind permission of © www.crystal-treasure.com |
Hauyne Mineral
Origin: Eifel Mts. / Germany Photo by kind permission of © Kristina Waz |
Hauyne
Size: 0.42 x 0.33 cm Weight: 0.25 ct Origin: Mendig / Eifel Mts. / Germany Photo by kind permission of © www.kox-gems.com |
Hauyne
Origin: Eifel Mts. / Germany Photo by kind permission of © Kristina Waz |
Hauyne
Size: 0.34 x 0.32 cm Weight: 0.09 ct Origin: Afghanistan Photo by kind permission of © Darlene Cobler |
Hauyne
Size: 0.47 x 0.47 cm Weight: 0.19 ct Origin: Afghanistan Photo by kind permission of © Darlene Cobler |
Hauyne bicolor
Size: 0.5 x 0.3 cm Weight: 0.25 ct Origin: Eifel Mts. / Germany Photo by kind permission of © www.kox-gems.com |
Formula Labradorite:
Na[AlSi3O8]Ca[Al2Si2O8]
Labradoriet, Labradoriitti, Labradorita, Labradoritas, Labradorite, Labradorīts, Лабрадорит, 래브라도라이트, ラブラドライト, 拉長石 Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.69 - 2.7 Refractive index: 1.560 - 1.570 Cleavage: different Colors: varied Luster: vitreous Fluorescence: yellowish Pleochroism: - Largest Labradorite: 5 cm? Deposits: Canada, Madagascar, Mexico, Russia, USA 1st Description: 1892 Name: Labradorite: Derived from the deposits along the coast of Labrador / Canada; Spectrolite: Named after the spectrum colors of reflected light |
Labradorite var. Spectrolite / Mineral
Origin: Finland Photo by kind permission of © www.mineraltivadar.hu |
Labradorite var. Spectrolite
Size: 2.45 x 1.14 x 0.67 cm Weight: 12.42 ct Origin: Madagascar Photo by kind permission of © www.gemselect.com |
Labradorite var. Spectrolite / Brooch
Size: 4.9 x 4.7 cm Material: Silver Origin: Finland Photo by kind permission of © www.atelierpst.com |
Labradorite Mineral
Origin: Ihosy / Madagascar Photo by kind permission of © www.TreasureMountainMining.com |
Labradorite Var. Spectrolite / Watch
Origin of the spectrolites: Ylämaa / Finland Photo by kind permission of © www.jalokivitukku.com |
Labradorite
Weight: 78.54 ct Origin: Australia Photo by kind permission of © www.online-edelstein.de |
Labradorite
Size: 3.9 x 3.0 x 1.9 cm Origin: Antsohamamy Quarry / Tulear / Madagascar Photo by kind permission of © www.lucianabarbosa.com |
Labradorite
Size: 1.42 x 1.33 cm Weight: 9.26 ct Origin: Canada Photo by kind permission of © www.irocks.com |
Labradorite
Size: 0.92 x 0.72 cm Weight: 1.60 ct Origin: Canada Photo by kind permission of © www.irocks.com |
Labradorite
Weight: 27 ct Size: 2.7 x 2.0 x 0.8 cm Origin: Australia ? Photo by kind permission of © www.jalokivitukku.com |
Labradorite
Size: 4.1 x 1.7 x 0.5 cm Weight: 54.60 ct Origin: Australia Photo by kind permission of © www.online-edelstein.de |
Labradorite
Weight: 9.81 ct Origin: Sakangyi Area / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Labradorite Spectrolite Cat's Eye
Size: 0.9 x 0.72 cm Weight: 1.65 ct Origin: Madagascar Photo by kind permission of © www.irocks.com |
Formula Moonstone: K[AlSi3O8]
Kuukivi, Mėnulio akmuo, Mondstein, Piedra de luna, Лунный камень, ムーンストーン, 月長石, سنگ ماه, אוליגוקלז Mineral class: silicates Crystal system: monoclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.56 - 2.62 Refractive index: 1.581 - 1.526 Colors: colorless, yellowish, reddish, brownish, bluish, black Fluorescence: slightly blueish, orange Pleochroism: - Largest Moonstone: ? Deposits: Sri Lanka, Australia, Myanmar, Brazil, India, Madagascar, Tanzania, USA Name: reminds one of the moonlight-like shimmering of the stone |
Moonstone Mineral
Size: 1.52 x 0.58 x 0.55 cm Origin: Sakangyi Area / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Moonstone Ring
Moonstone: 1.90 ct Diamonds: 2; total 0.55 ct Ring: 10.20 g; 18K White gold Photo by kind permission of © Chrisgo-CG-Design |
Moonstone
Weight: 1.85 ct Origin: Mogok / Myanmar Photo by kind permission of © www.americanthai.com |
Moonstone Mineral
Size: 2.1 x 1.9 x 1.6 cm Origin: Sakangyi Area / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Moonstone
Weight: 1.60 ct Size: 0.79 x 0.67 cm Origin: Tanzania Photo by kind permission of © www.gemfrance.com |
Moonstone Ring
Moonstones (pink): 5, total 4.30 ct Diamonds: total 1.99 ct Gold: 18K Yellow Gold Photo by kind permission of © www.collectorfinejewelry.com |
Moonstone
Size: 1.82 x 1.32 cm Weight: 12.26 ct Origin: India Photo by kind permission of © www.edelsteine.at |
Moonstone Cat's Eye
Weight: 7.26 ct Origin: India Photo by kind permission of © www.thegemtrader.com |
Moonstone Star
Size: 1.5 x 1.35 x 1.05 cm Weight: 15.33 ct Origin: Balangoda / Sri Lanka Photo by kind permission of © www.online-edelstein.de |
Formula Oligoclase:
(Na,Ca)(Si,Al)4O8
Oligoclasa, Oligoclasita, Oligoklaas, Oligoklas, Oligoklaz, Oligoklazas, Oligoklāzs, の間を灰曹長石, 올리고클래이스, Олигоклаз Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.64 - 2.66 Refractive index: 1.533 - 1.552 Cleavage: different Colors: colorless, grey, yellowish, bluish, greenish, rose, brown Luster: vitreous - pearly Fluorescence: X-rays: orange, green Pleochroism: strong Largest Oligoclase: 6 cm? Deposits: worldwide 1st Description: 1892 Name: from the Greek words "oligos" (little), and "kasein" (to break) |
Oligoclase Mineral
Origin: Hawk Mine / Hawk-Bakersville / Spruce Pine Distr. / Mitchell County / North Carolina / USA Photo by kind permission of © www.irocks.com |
Oligoclase slightly bluish
Size:: 0.53 x 0.33 cm Weight:: 0.23 ct Origin: Faraday Mine / Bancroft / Ontario / Canada Photo by kind permission of © www.alpinegems.ca |
Oligoclase
Size:: 1.15 x 0.90 x 0.57 cm Weight:: 3.32 ct Origin:: East Africa Photo by kind permission of © www.multicolour.com |
Oligoclase
Size:: 2.2 x 1.9 x 1.2 cm Weight:: 23 ct Photo by kind permission of © www.jalokivitukku.com |
Oligoclase "Confetti"
Weight:: 43.48 ct Origin:: Tanzania Photo by kind permission of © www.americanthai.com |
Formula Orthoclase / Adularia:
K(AlSi3O8)
Orthoclase, Orthoklaas, Orthose, Ortoclasa, Ortoclase, Ortoclasio, Ortoklas, Ortoklaz, Ortoklāzs, Ortoklazų, Ортоклаз, 正長石, אורתוקלז Mineral class: silicates Crystal system: monoclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.56 - 2.59 Refractive index: 1.518 - 1.525 Cleavage: very good Colors: colorless, whitish, grey-yellow, rose, green, brown Luster: vitreous - pearly Fluorescence: - Pleochroism: - Largest Orthoclase: 20 cm? Deposits: worldwide 1st Description: 1892 Name: Adularia: Derived from "Adula", the Latin name of Mt. St. Gotthard in the Swiss Alps. Orthoclase: From the Greek words "orthos" (right) and "kalo" (I cleave) which mean "straight fracture" |
Orthoclase
Weight: 4.61 ct Origin: Sakangyi Area / Mogok / Myanmar Photo by kind permission of © www.crystal-treasure.com |
Orthoclase Mineral
Size: 1.6 x 1.4 x 0.7 cm Origin: Itrongay / Betroka Dep. / Madagascar Photo by kind permission of © www.irocks.com |
Orthoclase Mineral
Origin: Hrongay / Betroka Dep. / Horombe Region / Fianarantsoa Prov. / Madagascar Photo by kind permission of © www.mindat.org |
Orthoclase
Size: 1.37 x 0.96 x 0.51 cm Weight: 4.03 ct Origin: Tanzania Photo by kind permission of © www.djraregems.com |
Orthoclase
Size: 2.37 x 2.06 cm Weight: 43.27 ct Origin: Madagascar Photo by kind permission of © www.edelsteine.at |
Orthoclase Mineral
Origin: Minh Tien Pegmatite / Luc Yen / Yen Bai Prov. / Vietnam Photo by kind permission of © www.caltech.edu/, Dr. George Rossman |
Orthoclase
Size: 1.42 x 0.99 x 0.65 cm Weight: 3.68 ct Origin: Vietnam Photo: Wimon Manorotkul, by kind permission of © www.palagems.com |
Orthoclase Cat's Eye
Weight: 4.37 ct Origin: Tanzania Photo by kind permission of © www.steveperrygems.com |
Orthoclase Star
Size: 1.61 x 1.42 cm Weight: 17.33 ct Origin: India Photo by kind permission of © www.ke4gems.com |
Orthoclase "Adularia" Mineral
Origin: Mt. Großvenediger / Hohe Tauern Mts. / Salzburg / Austria Photo by kind permission of © www.fabreminerals.com |
Orthoclase "Adularia"
Size: 0.7 x 0.59 cm Weight: 0.88 ct Origin: Zillertal Valley / Austria Photo by kind permission of © www.irocks.com |
Formula Peristerite:
Na,Al,Si3O
Peristerit, ペリステライト Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.61 - 2.63 Refractive index: 1.525 - 1.536 Colors: whitish, brownish, blue iridescence Fluorescence: - Pleochroism: - Largest Peristerite: ? Deposits: Canada Name: from the Greek word "peristera" (pigeon) |
Peristerite Mineral
Size: 5 cm Origin: Chupa Bay Pegmatite / Korelia Rep. / Russia Photo by kind permission of © www.cs.cmu.edu/~adg/adg-piimages.html |
Formula Sanidine:
(K,Na)(Si,Al)4O8
Riacolita, Sanidiini, Sanidin, Sanidina, Sanidino, Sanidīns, サニディン, Санидин, 새니딘 Mineral class: silicates Crystal system: monoclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.53 - 2.56 Refractive index: 1.518 - 1.530 Cleavage: perfect - distinct Colors: colorless, white, champagne Luster: vitreous Fluorescence: - Pleochroism: - Largest Sanidine: 50 cm? Deposits: worldwide 1st Description: 1892 Name: from the Greek words "sanis" (little plate), and "idos" (to see) |
Sanidine
Weight: 1.51 ct Origin: Eifel Mts. / Germany Photo by kind permission of © www.gemfrance.com |
Sanidine Mineral
Size: Micromount Origin: Niveligsberg / Kelberg / Eifel Mts. / Rhineland-Palatinate / Germany Photo by kind permission of © Stephan Wolfsried |
Sanidine
Weight: 2.38 ct Origin: Eifel Mts. / Germany Photo by kind permission of © www.gemfrance.com |
Sanidine
Weight: 2.01 ct Origin: Eifel Mts. / Germany Photo by kind permission of © www.gemfrance.com |
Sanidine
Size: 3.00 x 1.93 cm Weight: 40.13 ct Origin: Itrongay / Madagascar Photo by kind permission of © www.irocks.com |
Formula Sunstone:
(K,Na)(Si,Al)4O8
Sonnenstein, 太陽石, サンストーン Mineral class: silicates Crystal system: triclinic Mohs scale: 6 - 6.5 Density (g/cm3): 2.62 - 2.66 Refractive index (Oregon Sunstone): 1.525 - 1.580 Colors: reddish-orange, green, blue Fluorescence: - Pleochroism: - Largest Oregon Sunstone: 54 ct? Deposits: Canada, India, Russia, Sweden, Sri Lanka, USA Name: reminds one of the sunlight-like shimmering of the stone History: Already Pope Clemens VII. (1478 - 1534) should have possessed a Sunstone. Indians in todays Oregon / USA exchanged Sunstone. First description: Breithaupt, 1826 In 1987 the Oregon Sunstone was declared official gem of the state Oregon. Discovery of the "Massai Sunstone" in Tanzania in 2000, near Arusha. (Source: www.gemstv.de) |
Sunstone "Confetti"
Weight: 3.43 ct Origin: Tanzania Photo by kind permission of © www.thegemtrader.com |
Sunstone
Size: 1.37 x 1.0 cm Weight: 4.84 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone
Size: 1.15 x 1.2 cm Weight: 3.43 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone
Size: 1.69 x 1.08 cm Weight: 7.97 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.rarestone.com |
Sunstone
Size: 1.4 x 1.15 cm Weight: 7.45 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone Mineral
Origin: Plush / Oregon / USA Photo by kind permission of © http://skywalker.cochise.edu |
Sunstone
Weight: 2.80 ct Origin: Dust Devil Mine / Plush / Oregon / USA Photo by kind permission of © www.theimage.com |
Sunstone with Hematite Inclusions
Size: 2.9 x 1.53 x 0.89 cm Weight: 20.37 ct Origin: Arusha / Tanzania Photo: Mia Dixon, by kind permission of © www.palagems.com |
Sunstone
Weight: 0.36 ct Size: 0.6 x 0,42 x 0.26 cm Origin: Plush / Oregon / USA Photo by kind permission of © www.gemfrance.com |
Sunstone
Size: 1.92 x 1.25 cm Weight: 13.73 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.rarestone.com |
Sunstone
Size: 1 cm Weight: 4.50 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone
Size: 1.92 x 1.45 cm Weight: 12.38 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.rarestone.com |
Sunstone
Size: 1.2 cm Weight: 6.56 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.irocks.com |
Sunstone
Weight: 3.25 ct Origin: Dust Devil Mine / Plush / Oregon / USA Photo by kind permission of © www.theimage.com |
Sunstone
Size: 1.03 cm Weight: 2.88 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone
Size: 1.1 cm Weight: 3.76 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.wsfgems.com |
Sunstone
Weight: 1.45 ct Origin: Plush / Oregon / USA Photo by kind permission of © www.minclassics.com |
Sunstone Star
Size: 1.88 x 1.43 x 1.24 cm Weight: 23.68 ct Origin: India Photo by kind permission of www.gemselect.com |