Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Synthetic/Man-made Material
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
Learn about Synthetic Polymer (Polylactic Acid) in the encyclopedia
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Eudialyte in Matrix
Na15Ca6(Fe,Mn)3Zr3(Si,Nb) (Si25O73) (OH,Cl,H2O)3
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Emerald / Fluorite
Beryl (Be3Al2Si6O18) / Fluorite (CaF2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Banded Agate (specifically Botswana Agate appearance)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Calcite
Calcite (CaCO3)
mineral
Limestone
Calcium carbonate ( преимущественно CaCO3)
sedimentary
Malachite
Malachite - Cu2CO3(OH)2
mineral
Black Limestone with Calcite Veining
Bituminous Limestone (CaCO3 with Organic Carbon inclusions)
sedimentary
Pallasite Meteorite (likely Imilac or Brenham)
Stony-Iron Meteorite (Pallasite)
mineral
Granite Pebble
Granite (a phaneritic intrusive igneous rock consisting of quartz, alkali feldspar, and plagioclase)
igneous
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Blue Quartzite
Quartzite with inclusions (SiO2)
metamorphic
Red Quartzite
Quartzite (SiO2 with iron oxide impurities)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Unidentifiable Specimen
Undetermined
Unknown
Black Jasper
Silicon Dioxide (SiO2) with inclusions
sedimentary
Quartzite (River Cobble)
Quartzite (Metamorphosed Quartz Sandstone, SiO2)
metamorphic