Diamond
Diamond (pure native carbon, C)
Category
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Diamond
Diamond (pure native carbon, C)
Rough Diamond
Diamond (C)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Pink Quartz (SiO2)
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
Magnetite (potentially Hematite-rich)
Magnetite (Fe3O4)
Schorl (Black Tourmaline) in Quartz and Feldspar
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Jade (Nephrite or Jadeite)
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)
Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Unakite
Unakite (altered granite)
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Yellow Ocher / Limonite
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
Pyrite
Iron Sulfide (FeS2)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Diamond
Diamond (pure Carbon, C)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Beach Pebble)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Ruby in Zoisite
Anyolite (Ruby in Zoisite)
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Moonstone
Orthoclase (KAlSi3O8), specifically the variety showing adularescence
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Larimar
Pectolite (Blue variety), NaCa2Si3O10(OH)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
Opal
Hydrated Silica (SiO2·nH2O)