Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Category
Organic Gemstone (Not A Mineral)
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Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Chalcedony on Matrix (Botryoidal Agate)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Larimar
Pectolite (Blue variety), NaCa2Si3O10(OH)
mineral
Alexandrite in Matrix
Chrysoberyl (BeAl2O4 with Chromium)
mineral
Epidote
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Black Opal
Hydrated Silica (SiO2·nH2O)
mineral
Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Aquamarine (Rough)
Beryl (Be3Al2Si6O18)
mineral
Limonite with Opal infusion
FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Amazonite
K(AlSi3O8) - Lead-bearing Microcline (Potassium Feldspar)
Mineral
Jasper with Agate Inclusions
Jasper (Silicon Dioxide, SiO2) with Chalcedony/Agate
sedimentary
Amazonite
Microline Feldspar (KAlSi3O8)
mineral
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Hawk's Eye (Blue Tiger's Eye)
Quartz (fibrous crocidolite variety)
Mineral
Amazonite
Tectosilicate Microcline (KAlSi3O8)
mineral
Raw Emerald in Schist Matrix
Beryl (Be3Al2Si6O18) in Mica Schist
Mineral in Metamorphic Rock
Amethyst
Amethyst (Silicon Dioxide SiO2 + Fe4+)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Botryoidal/Chalcedony Rose)
Silicon Dioxide (SiO2)
mineral
Quartz (Citrine or Smoky variety)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group
Mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Limestone (Tufa/Travertine)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Emerald in Schist (Raw/Tumbled)
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities in Mica Schist
metamorphic
Yooperlite (Fluorescent Sodalite-bearing Syenite)
Sodalite-rich Syenite
igneous