Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Category
Man Made Object (Metal Alloy)
Browse man made object (metal alloy) specimens identified by the Rock Identifier community.
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Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Desert Varnish on Sandstone
Quartz Arenite with Iron-Manganese Oxide Coating
sedimentary
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
igneous
Sandstone with Desert Varnish
Arenite (SiO2 predominantly) with Ferromanganese coating
sedimentary
Quartzite with Pyrite Inclusions
Metamorphic Quartz-rich Rock
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Black Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Hematite
Hematite (Fe2O3)
mineral
Magnetite (potentially Hematite)
Magnetite (Fe₃O₄)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Gold Nugget
Native Gold (Au)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Chromium (Chrome)
Chromium (Cr)
mineral
Hematite
Hematite (Iron (III) oxide, Fe2O3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Coal
Biogenic sedimentary rock (Carbon)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Chert (specifically Flint or Dark Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Bort or Carbonado
C - Polycrystalline Diamond
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Bixbyite on Rhyolite
Bixbyite (Mn2+,Fe3+)2O3
mineral
Gold Nugget
Native Gold (Au)
mineral
3D Printed PLA Elephant (Silk Multi-color)
Polylactic Acid (C3H4O2)n
Synthetic Polymer (Polylactic Acid)
Moissanite
Silicon Carbide (SiC)
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Clear quartz sphere or polished quartz cabochon (tentative)
Quartz, silicon dioxide (SiO₂); appearance may also be consistent with ordinary glass, which cannot be ruled out from the image alone
gemstone
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
sedimentary
Granite
Intrusive igneous rock
igneous
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral