Chalcedony in Matrix
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Chalcedony in Matrix
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe)
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Amber (in Matrix/Shale)
Amber (Fossilized Tree Resin)
Granite
Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
Rhodochrosite
Manganese Carbonate (MnCO3)
Yellow Jasper (Limonite-stained Chert)
Silicon Dioxide (SiO2) with Limonite/Goethite inclusions
Red Jasper
Silicon dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Riverstone Jasper (Chert variant)
Silicon Dioxide (SiO2)
Jasper (likely a variety of Brecciated Jasper or a patterned variety)
Silicon dioxide (SiO2)
Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO₂)
Milky Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Green Quartz (Prasiolite)
Silicon Dioxide (SiO2) with trace impurities
Pallasite Meteorite
Pallasite (ST-class)
Diamond (or Cubic Zirconia simulant)
Carbon (C) or Zirconium Dioxide (ZrO2)
Riverstone Jasper (Chalcedony)
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Serpentine
Serpentine Group Minerals (e.g., Antigorite, Chrysotile, Lizardite)
Amber
Succinicum (C10H16O)
Sunstone (Heliolite)
Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)
Amber
Succinite
Selenite (Gypsum Variety)
Hydrous Calcium Sulfate (CaSO4·2H2O)