White Jade (Nephrite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Category
Mineral (Specifically A Cryptocrystalline Variety Of Quartz)
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
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Selenite Gypsum
Hydrous calcium sulfate (CaSO4·2H2O)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chalcedony (Agate)
Chalcedony (Cryptocrystalline Quartz, SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Tumbled)
Cryptocrystalline Quartz (SiO2)
mineral
Banded Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Tumbled jasper (likely brecciated or red jasper)
Jasper, microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides
mineral
Moonstone
Orthoclase Feldspar (specifically showing adularescence)
Mineral
Chert (Flint) with Quartz Inclusions
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled agate or chalcedony
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/agate
mineral
Dragon Blood Jasper
SiO2
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Red Jasper (Skull Carving)
Jasper, a cryptocrystalline variety of Quartz (SiO2)
sedimentary
Dalmatian Jasper
Feldspar-Quartz Microgranite
igneous
Polished agate/jasper pebble (probable)
Microcrystalline quartz, SiO₂, with iron-oxide and other inclusions
mineral
Chert (Arrowhead/Projectile Point)
Microcrystalline quartz (SiO2)
sedimentary
Polished brown jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
mineral
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
Leopardite
Quartz porphyry / Quartz monzonite with manganese oxide spots
igneous
Pink Granite
Phaneritic intrusive igneous rock with dominant Alkali Feldspar
igneous
Chert (or Dark Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Agate
Silicon Dioxide (SiO2)
mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Carved Sea Turtle Figurine (Aventurine / Quartz / Jasper)
Quartz variety (SiO2) / Polycrystalline Quartz Aggregate
mineral
Orange-red jasper pebble
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled yellow jasper
Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions
mineral
Agate (specifically Moss or Plume Agate nodding toward Agatized Wood)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz (Chalcedony)
mineral
Yellow Chalcedony (Tumbled/Cabochon)
Silicon dioxide (SiO2)
mineral
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Polished yellow chalcedony (likely lemon agate or yellow jasper)
Microcrystalline quartz, SiO₂
mineral
Chert (specifically Blue or Grey Chert/Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished jasper pebble
Microcrystalline quartz (chalcedony), chiefly SiO₂, with iron-oxide impurities
mineral
Chert (Flint) River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Biggs Jasper
Cryptocrystalline Quartz (Silicon Dioxide) - SiO2
sedimentary
Milky quartz pebble
Quartz (SiO₂), cryptocrystalline to coarse microcrystalline variety
mineral
Agate Slab
Chalcedony (SiO2)
mineral