Carnelian
Carnelian (variety of Chalcedony, SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Carnelian
Carnelian (variety of Chalcedony, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Polished red jasper (likely hematite-bearing jasper)
Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides such as hematite/goethite
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Blue Tiger's Eye
Riebeckite (crocidolite variety)
Quartz
Silicon Dioxide (SiO2)
Moonstone
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate
Chalcedony (SiO2) with impurities
Labradorite
(Ca, Na)(Al, Si)4O8
Tumbled ruby or ruby-bearing corundum
Corundum (Al₂O₃), red variety colored mainly by chromium
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Green Quartz (Prasiolite)
Crystalline Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Banded Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
Carnelian
SiO2 (Silicon Dioxide), a variety of Chalcedony
Black Garnet (Melanite)
Andradite, Ca3Fe2(SiO4)3
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Yellow/Citrine variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Granitic Pegmatite with Tourmaline
Granite (Feldspar/Quartz matrix) with Schorl (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
Green cabochon gemstone pendant
Indeterminate; likely dyed green turquoise, chrysoprase, or opaque beryl set with blue/clear accent stones
Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar (Twinning Specimen)
Orthoclase (KAlSi3O8)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
Red Jasper (Opaque Chalcedony)
Jasper / Silicon Dioxide (SiO2) with Ferric Iron inclusions
Chert (Flint Nodular)
Chert (Silicon dioxide, SiO2)