Pearl
Calcium Carbonate (Aragonite) - CaCO3
mineral
Category
Organic Gemstone (Not A Rock)
Browse organic gemstone (not a rock) specimens identified by the Rock Identifier community.
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Amethyst Quartz (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst (Rough Quartz)
Silicon Dioxide (SiO2 with Iron impurities)
mineral
Purple Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Amethyst (in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Cavansite
Cavansite (Ca(VO)Si4O10·4H2O)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Agate
Silicon dioxide (SiO2) - variety Chalcedony
mineral
Carnelian
Carnelian (Silica, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mica-rich Pegmatite
Pegmatite (rich in Muscovite and Biotite)
igneous
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite or Chlorite
mineral
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Unakite
Epidotized Granite
metamorphic
Unakite Pebble
Epidotized Granite
metamorphic
Quartz (Milky or Druzy variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Dumortierite Quartz
AlAl6BSi3O18 (Dumortierite) within SiO2 (Quartz)
mineral
Labradorite
Labradorite (Plagioclase Feldspar series; (Ca,Na)(Al,Si)4O8)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Quartzite)
Silicon Dioxide (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
mineral