Jasper containing fossilized inclusions
Silicon Dioxide (SiO2) with trace impurities and biogenic inclusions
sedimentary
Category
Organic Gem Material (Botanical)
Browse organic gem material (botanical) specimens identified by the Rock Identifier community.
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Synthetic (glass)
Shale
Shale
sedimentary
Amber
Succinite (Organic Gemstone)
mineral
Amber / Copal
Organic resin, C10H16O
mineral
Amber
Succinite (Organic Mineraloid)
mineral
Amethyst (Rose de France varieties or Amethystine Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Coal (most likely Bituminous or Anthracite)
Bituminous Coal (Grade of Coal), Anthracite (Grade of Coal)
Sedimentary Rock
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Blue Calcite
Calcite (CaCO3)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Silicon Dioxide (SiO2) with trivalent iron (Fe3+) impurities
mineral
Coral (Precious Coral)
Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).
Mineral, Organic Gemstone
Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate)
Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement
Mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Peridotite
Ultramafic intrusive rock (Peridotite)
Igneous
Watermelon Tourmaline in Quartz Matrix
Elbaite (complex Borosilicate) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
mineral
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Peridot
Olivine (Mg,Fe)2SiO4
Mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Yellow Quartz / Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt with Vesicular Texture
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Garnet (likely Almandine)
Almandine Garnet, Fe3Al2(SiO4)3
mineral
Almandine Garnet
Almandite (Fe3Al2(SiO4)3)
Mineral
Pink Tourmaline (Rubellite)
Elbaite - Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3OH
mineral
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Peridotite (Olivine)
Peridotite (comprising (Mg,Fe)2SiO4)
igneous
Chrysocolla in Matrix
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Chrysocolla in Matrix
Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous