Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
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Raw Topaz
Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2
mineral
Greenstone
Greenschist / Greenstone (contains epidote, chlorite, and actinolite)
metamorphic
Jasper
Chalcedony (SiO2)
mineral
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Tumbled jasper (likely brecciated or ocean jasper)
Microcrystalline quartz (SiO₂), with iron-oxide staining and possible chalcedony
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz (specifically Dumortierite Quartz)
Silicon Dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)
metamorphic
Pink Granite
Phaneritic intrusive igneous rock with dominant Alkali Feldspar
igneous
Granite (Pink Orthoclase variety)
Phaneritic intrusive igneous rock (Quartz, Orthoclase, Plagioclase, and Mica)
igneous
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Blue Zircon
Zirconium Silicate (ZrSiO4)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sunstone
Heliolite (Sodium Calcium Aluminum Silicate with Iron or Copper inclusions)
mineral
Banded Agate (specifically Sardonyx or Black Agate variety)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Red Jasper with Hematite
Impure Microcrystalline Quartz (SiO2) with Hematite (Fe2O3)
sedimentary
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
igneous
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
sedimentary
Labradorite in Matrix
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sunstone
Oligoclase (Feldspar variety)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (specifically Oolitic or Brecciated Jasper)
Silicon Dioxide (SiO₂)
sedimentary
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
mineral
Jasper Agate (specifically Brecciated Jasper with Agate inclusions)
Silicon Dioxide (SiO2)
mineral
Agate (specifically Carnelian or Honey Agate)
Silicon Dioxide (SiO2)
Mineral
Amber (Sumatran / Indonesian Red Blue)
Succinum (Fossilized Tree Resin)
fossil
Milky Quartz Mushroom Carving
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese
mineral
Red Jasper
Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)
Mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Obsidian
Volcanic Glass (SiO2 + minor impurities)
igneous
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
mineral
Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 predominant)
sedimentary
Ruby
Corundum (Al2O3 with Chromium traces)
mineral