Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Category
Mineral (Gemstone)
Browse mineral (gemstone) specimens identified by the Rock Identifier community.
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Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Quartz Mineral
Silicon dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Olivine (Peridotite)
Magnesium iron silicate (Mg, Fe)2SiO4
igneous
Gemstone Ring
Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)
gemstone
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Weathered gray pebble
Likely fine-grained basalt or andesite; exact identification requires testing
igneous
Turquoise
Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O
mineral
Citrine
Silicon dioxide (SiO2) - yellow quartz variety
mineral
Amber
Succinates (Fossilized Tree Resin)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Smoky quartz ring
Quartz (SiO₂), likely smoky quartz; the surrounding stones and metal cannot be identified reliably from the image.
gemstone
Sunstone (Feldspar)
(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Amazonite
Microcline (K(AlSi3O8))
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8) with inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Yellow/Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)3O8
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
gemstone
Aquamarine
Be3Al2(Si6O18)
gemstone
Ametrine
Quartz (Silicon Dioxide, SiO2)
gemstone
White Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Yellow / Citrine Pebble)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Quartz Druse on Basalt Matrix
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Tourmaline inclusion (Tourmalinated Quartz)
Silicon Dioxide (SiO2) with Tourmaline inclusions
mineral
Rough Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Peridot in Matrix
Olivine ((Mg,Fe)2SiO4)
mineral
Quartz (Rose Quartz or Chert variant)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
mineral