Botryoidal Hematite
Iron(III) oxide (Fe2O3)
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Colorless Quartz (Rhinestone)
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Morganite and Aquamarine (Beryl) Bracelet
Beryllium aluminum silicate, Be3Al2(SiO3)6
gemstone
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Hemimorphite
Hemimorphite (Zn4Si2O7(OH)2·H2O)
mineral
Green Quartz
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
sedimentary
Spodumene
Spodumene (LiAl(SiO3)2)
mineral
Polished agate with possible iron-oxide inclusions
Microcrystalline quartz (chalcedony), SiO₂; inclusions appear to be iron oxides, possibly goethite or hematite
mineral
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Hematite (Fe2O3)
mineral
Snowflake obsidian beads
Obsidian, volcanic glass (predominantly SiO₂), with pale cristobalite/spherulitic inclusions
igneous
Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Aquamarine with Tourmaline Inclusions
Beryl (Be3Al2Si6O18) with Tourmaline
gemstone
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
mineral
Lapis Lazuli
Na6Ca2(Al6Si6O24)(S,SO4,Cl)1-2 (primarily containing Lazurite with inclusions of Calcite and Pyrite)
metamorphic
Silver Nuggets (Natural or Cast)
Native Silver (Ag)
mineral
Kyanite
Aluminum Silicate, Al2SiO5
mineral
Aura Quartz
Silicon Dioxide (SiO2) treated with metal vapor
gemstone
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Polished decorative stone spheres
Mixed material; individual spheres may be agate, jasper, quartz, or other ornamental minerals
mineral
Dyed howlite or magnesite turquoise imitation beads
Howlite: Ca₂B₅SiO₉(OH)₅; commonly dyed blue to resemble turquoise
mineral
Epidote
Epidote, Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Tiger's Eye
Silicon Dioxide with Crocidolite inclusions (SiO2)
mineral
Tiger's Eye
Silicon dioxide with crocidolite inclusions (SiO2)
gemstone
Fossilized shell fragment
Likely calcitic or aragonitic bivalve/gastropod shell; exact taxon indeterminate
fossil
Likely dyed or painted stone
Unidentified natural rock; vivid purple, orange, and pink coloration appears to be a surface coating or pigment, so the underlying rock cannot be reliably identified from the image.
metamorphic
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
mineral
Tiger's Eye
Silicon dioxide with crocidolite inclusions (SiO2)
gemstone
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Hematite bead strand
Hematite, α-Fe₂O₃ (iron(III) oxide)
mineral
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)