Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Precious Opal
Hydrated Silicon Dioxide (SiO2·nH2O)
Amber
Fossilized tree resin (mainly polymerized diterpenoid resin)
Green Jasper / Plasma
Microcrystalline Quartz (Chalcedony), SiO2 with inclusions
Quartz crystal cluster in matrix
Silicon dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
Quartz with Inclusions
Silicon Dioxide (SiO2)
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
Polished agate/geode fragment
Microcrystalline quartz (chalcedony), SiO₂, with possible calcite or quartz cavity lining
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Crystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Chert (Dark Variety / Flint)
Silicon Dioxide (SiO2)
Tumbled reddish-brown chalcedony, possibly carnelian
Chalcedony (microcrystalline quartz), SiO₂; red variety commonly called carnelian
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Agate
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO₂)
Ocean Jasper
Orbicular Jasper (variety of Chalcedony)
Turquoise and Red Coral
CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2)
Pyrite (Fool's Gold) in Matrix
Iron Disulfide (FeS2)
Tumbled Rose Quartz with Matrix
Rose Quartz - SiO2 (Silicon Dioxide)
Pyrite
Iron Sulfide (FeS2)
Rainbow Moonstone
White Labradorite (Feldspar variety)