Sphalerite with Siderite and Pyrite
Zinc Sulfide (ZnS) with Iron Carbonate (FeCO3) and Iron Disulfide (FeS2)
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Diamond
Carbon (C)
mineral
Shark Tooth Fossil
Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)
fossil
Epidote
Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))
mineral
Diamond
Diamond (C)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Beaded gemstone jewelry (likely amethyst, lapis lazuli, and pearl or glass imitation)
Mixed mineral beads; possible quartz (SiO₂) and lazurite-bearing lapis lazuli
gemstone
Carnelian Agate / Iron-Stained Quartz
SiO2
Mineral
Silver Nuggets (Natural or Cast)
Native Silver (Ag)
mineral
Epidote
Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Prehnite
Prehnite, Ca2Al(AlSi3O10)(OH)2
mineral
Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Polished decorative stone spheres
Mixed material; individual spheres may be agate, jasper, quartz, or other ornamental minerals
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Shark Tooth Fossil
Chondrichthyes fossil
fossil
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Dinosaur Bone
Agatized Dinosaur Bone
sedimentary/fossil
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
mineral
Tiger's Eye
Silicon Dioxide (SiO2) with fibrous inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Colorless Quartz (Rhinestone)
Silicon Dioxide (SiO2)
mineral
Carnelian Agate / Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Dyed howlite or magnesite turquoise imitation beads
Howlite: Ca₂B₅SiO₉(OH)₅; commonly dyed blue to resemble turquoise
mineral
Diamond
Carbon (C)
mineral
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2 (Complex silicate rock)
rock
Lapis Lazuli
Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)
metamorphic
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Polished garnet beads
Garnet group, commonly almandine–pyrope solid solution (approximately Fe₃Al₂(SiO₄)₃–Mg₃Al₂(SiO₄)₃)
gemstone
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
mineral
Blue-green cabochon pendant, likely turquoise or composite turquoise
Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification is uncertain from the blurred image
gemstone
Geode
Quartz / Chalcedony nodule
sedimentary
Amethyst
Quartz, purple variety — silicon dioxide (SiO₂)
gemstone
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst (as seen in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral