Granite
Granite (plutonic igneous rock)
igneous
Category
Man Made Object (Simulant)
Browse man made object (simulant) specimens identified by the Rock Identifier community.
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Coquina
Biogenic Limestone (CaCO3)
sedimentary
Polished agate or jasper cabochon
Cryptocrystalline quartz, SiO₂, possibly iron-rich jasper inclusions
gemstone
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Green Jasper / Chert
Microcrystalline Quartz (SiO2)
sedimentary
Jasper in Calcite / Brecciated Jasper
Silicon dioxide with calcium carbonate (SiO2 with CaCO3)
sedimentary
Petrified Wood
Silicified Wood (Permineralized organic tissue)
fossil
Agate
Chalcedony (SiO2)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Fossil Snail Shell (Embedded in Resin)
Gastropoda fossil
fossil
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Jasper
Silicon dioxide (SiO2) microcrystalline quartz
sedimentary
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Botryoidal Chalcedony / Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Chalcedony (SiO2)
sedimentary
Agate / Chalcedony Geode
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified wood (SiO2)
fossil
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Tiger's Eye
Silicon Dioxide with Crocidolite inclusions (SiO2)
gemstone
Fossilized Gastropod Shell
Gastropoda (Fossilized internal mold or shell body)
fossil
Tiger's Eye
Quartz pseudomorph after Crocidolite (SiO2 with Fe oxide inclusions)
mineral
Clear Quartz (Faceted)
Silicon dioxide (SiO2)
gemstone
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Malachite
Copper(II) carbonate hydroxide, Cu2CO3(OH)2
mineral
Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
mineral
Amazonite
K(AlSi3O8) - Microcline (Var. Amazonite)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Anthropomorphic Textile Construct
Jasper Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Agate
Chalcedony (SiO2)
Mineral
Polished banded agate (likely Botswana agate)
Microcrystalline quartz, SiO₂ (chalcedony with iron-oxide and other mineral bands)
mineral