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Cut and Polished Crystals - By Chemical Composition

(CaNa)(SiAl)4O8, Sodium Calcium Aluminosilicate (6 Items)
(Fe,Mg,Al)6(Si,Al)4O10(OH)8, Hydrous Ferro Magnesium Aluminum Silicate (2 Items)
(Mg,Fe)3Si2O5(OH)4, Hydrous Magnesium Iron Silicate (2 Items)
(Mn,Fe,Mg,Ca)SiO3, Manganese Silicate (1 Item)
(Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Sodium Calcium Aluminosilicate (11 Items)
(SiO2) with NaFe3(Al,Fe)6Si6O18(BO3)3(OH)4, Silicone Dioxide with Sodium Iron Aluminum Boro Silicate (1 Item)
(ZnFe)S, Zinc Sulfide (1 Item)
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A3B2(SiO4)3 (1 Item)
Al2(SiO4)O, Aluminum Silicate with Graphite Inclusions (1 Item)
Al2O3, Aluminum Oxide (2 Items)
Al2O3, Aluminum Oxide with Inclusions (1 Item)
Al2SiO5, Aluminosilicate (3 Items)
Al2SiO5, Aluminum Silicate (2 Items)
Al7BO3(SiO4)3O3, Aluminium Boro Silicate (1 Item)
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Be3Al2Si6O18, Beryllium Aluminum Silicate (1 Item)
Bi, Elemental Bismuth (1 Item)
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Ca(VO)Si4O10(H2O)4, Calcium Vanadium Silicate (1 Item)
Ca2(Mg,Fe)5Si8O22(OH)2, Calcium Magnesium Iron Silicate (3 Items)
Ca2Al2Si3O10(OH)2, Calcium Alumium Silicate (1 Item)
Ca2Al3(Si)4)3(OH), Calcium Aluminum Silicate (1 Item)
Ca2Al3(SiO4)3(OH), Calcium Aluminum Silicate (1 Item)
Ca2B5SiO9(OH)5, Calcium Borosilicate Hydroxide (1 Item)
Ca5(PO4)3(OH,F,Cl), Calcium Chloride Fluoride Phosphate (2 Items)
CaAl2Si3O10 3H2O, Hydrated Calcium Aluminum Silicate (3 Items)
CaCO3, Calcium Carbonate (6 Items)
CaCO3, Calcium Carbonate with Impurities (1 Item)
CaCO3, Calcium Carbonate with Impurities and/or Inclusions (1 Item)
CaCO3, Calcium Carbonate with Sulfur (1 Item)
CaF2, Calcium Fluoride (8 Items)
CaPb2Al2Fe(SiO4)3(OH), Calcium Aluminium Iron Sorosilicate (1 Item)
CaSO4, Calcium Sulfate (6 Items)
CaSo4 2(H20), Calcium Sulfate Dihydrate (3 Items)
CaSO4 2(H2O), Calcium Sulfate Dihydrate (10 Items)
Complex Composition of Calcite and Aragonite (CaCO3 Calcium Carbonate) with Limestone/Dolomite (CaMg(CO3)2 Calcium Magnesium Carbonate) (2 Items)
Cu(Al,Fe3+)6(PO4)4(OH)8 4H2O, Hydrated Copper Aluminum Phosphate (1 Item)
Cu2 xAlx(H2 xSi2O5)(OH)4 nH2O, Hydrated Copper Phyllosilicate (3 Items)
Cu2CO3(OH)2, Copper Carbonate Hydroxide (3 Items)
CuFeS2, Copper Iron Sulfide (1 Item)
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Fe2+3(PO4)2 8H2O, Hydrated Iron Phosphate (1 Item)
Fe2O3, Iron Oxide (2 Items)
FeS2, Iron Sulfide (3 Items)
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K(AlSi3O8), Potassium Aluminum Silicate (2 Items)
K(Na,Ca)11(Ba,Sr)Si18O46(OH,F) nH2O, Hydrated Potassium Calcium Sodium Silicate Hydroxide Fluoride (1 Item)
KAl2(AlSi3O10)(F,OH)2, Potassium Aluminum Silicate Hydroxide Fluoride (4 Items)
KLi2Al(Si4O10)(F,OH)2, Potassium Lithium Aluminum Fluorosilicate (1 Item)
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LiAlSi2O6, Lithium Aluminum Silicate (1 Item)
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MnCO3, Manganese Carbonate (1 Item)
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Na(90 70%)Ca(10 30%) (Al,Si)AlSi2O8, Sodium Calcium Aluminum Silicate (3 Items)
Na(90 70%)Ca(10 30%)(Al,Si)AlSi2O8, Sodium Potassium Aluminium Silicate (1 Item)
Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2, Zircon Silicate (1 Item)
Na4Al3(SiO4)3Cl, Sodium Aluminum Silicate Chloride (9 Items)
NaCa2Si3O8(OH), Sodium Calcium Silicate Hydroxide (2 Items)
NaFe3(Al,Fe)6Si6O18(BO3)3(OH)4, Sodium Iron Aluminum Boro Silicate (3 Items)
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Pink Orthoclase Feldspar KAlSi3O8, Potassium Aluminum Silicate, Green Epidote Ca2(Al,Fe)3(SiO4)3(OH), Calcium Aluminum Iron Silicate Hydroxide, and SiO2 (2 Items)
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SiO2+Au and In, Silicon Dioxide bonded and coated with Gold and Indium (4 Items)
SiO2, Silicon Dioxide (114 Items)
SiO2, Silicon Dioxide bonded and coated with Gold (5 Items)
SiO2, Silicon Dioxide bonded and coated with Gold and/or Indium (1 Item)
SiO2, Silicon Dioxide bonded and coated with Gold and/or Iron Oxide (2 Items)
SiO2, Silicon Dioxide bonded and coated with Silver and/or Platinum (4 Items)
SiO2, Silicon Dioxide Complex A Quartz/Tourmaline Trachyte (1 Item)
SiO2, Silicon Dioxide naturally irradiated (34 Items)
SiO2, Silicon Dioxide with Carbon and Iron (2 Items)
SiO2, Silicon Dioxide with Copper Silicates Inclusions (1 Item)
SiO2, Silicon Dioxide with Copper/Cobalt/Manganese/Chromium Inclusions (1 Item)
SiO2, Silicon Dioxide with Green Mineral Inclusions (2 Items)
SiO2, Silicon Dioxide with Hematite Inclusions (3 Items)
SiO2, Silicon Dioxide with Hematite or Pyrite Inclusions (3 Items)
SiO2, Silicon Dioxide with Impurities (20 Items)
SiO2, Silicon Dioxide with Inclusions (6 Items)
SiO2, Silicon Dioxide with Inclusions and/or Impurities (6 Items)
SiO2, Silicon Dioxide with Iron (2 Items)
SiO2, Silicon Dioxide with Iron and Magnesium Inclusions (1 Item)
SiO2, Silicon Dioxide with Iron or Titanium Inclusions (23 Items)
SiO2, Silicon Dioxide with Iron Oxide Impurities (8 Items)
SiO2, Silicon Dioxide with Lithium Inclusions (2 Items)
SiO2, Silicon Dioxide with Mica Inclusions (17 Items)
SiO2, Silicon Dioxide with Titanium (Oxides and Hydroxides) Inclusions (10 Items)
SiO2 nH2O, Hydrated Silicon Dioxide (1 Item)
SiO2nH2O, Hydrated Silica (1 Item)
SrSO4, Strontium Sulfate sometimes with Barium (1 Item)
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TiO2, Titanium Oxide (1 Item)
Typical Shungite: 30% Carbon, 57% Silicates and 13% Aluminum, Iron, Manganese, etc. / Noble Shungite: at least 94% Carbon (2 Items)
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ZrO2, Zirconium Oxide (1 Item)
[Na(90 70%)Ca(10 30%) Al,Si]AlSi2O8, Sodium Calcium Aluminum Silicate (2 Items)
{Ca2}{Al,Mn3+3}(Si2O7)(SiO4)O(OH), Calcium Aluminum Silicate Hydroxide (1 Item)