Emerald (Faceted Gemstone)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Precious Red Coral
Corallium rubrum / Corallium japonicum
mineral (organic gemstone)
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
mineral
Amethyst (Faceted Gemstone)
Silicon Dioxide (SiO2) with iron impurities
mineral
Spiny Oyster Shell
Spondylus (Calcium Carbonate, CaCO3)
mineral
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
metamorphic
Pearl
Calcium Carbonate (Aragonite) - CaCO3
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Pearl
Calcium carbonate (CaCO3) - Aragonite/Calcite variety
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Mineral/Mineraloid within a rock matrix
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Turquoise (with Hematite)
CuAl6(PO4)4(OH)8·4H2O
mineral
Garnet
Garnet Group (Silicate Minerals)
mineral
Precious Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Citrine Quartz Sphere
Silicon Dioxide (SiO2)
mineral
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Jasper
Silicon dioxide (SiO2) with iron inclusions
sedimentary
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
metamorphic
Amethyst
Silicon dioxide (SiO2)
mineral
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
mineral
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Olivine (Peridotite)
Magnesium iron silicate (Mg, Fe)2SiO4
igneous
Turquoise and Spiny Oyster (Heishi style beads)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)
mineral and organic gemstone
Amber
Succinite (a fossilized organic resin)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Cat's Eye Moonstone (Feldspar)
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8) inclusions
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral
Emerald in Host Rock
Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium
mineral
Sunstone
(Ca,Na)(Al,Si)4O8 (Oligoclase or Andesine)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral