Sunstone (Oregon Sunstone)
Labradorite (Feldspar variety) - (Ca, Na)(Al, Si)4O8
mineral
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
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Chert (specifically Gray Chert/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Granite (Pink/Red variety)
Felsic Intrusive Igneous Rock
igneous
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Lake Superior Agate
SiO2 (Quartz variety chalcedony)
gemstone
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
sedimentary
Chert
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Pink Granite
Phaneritic intrusive igneous rock with dominant Alkali Feldspar
igneous
Moonstone (with Tourmaline/Mica)
Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)
mineral
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
mineral
Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Flint) with Quartz Inclusions
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled jasper (likely brecciated or red jasper)
Jasper, microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides
mineral
Tumbled agate or chalcedony
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/agate
mineral
Dragon Blood Jasper
SiO2
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Polished agate/jasper pebble (probable)
Microcrystalline quartz, SiO₂, with iron-oxide and other inclusions
mineral
Chert (specifically tan/pink variety)
Silicon Dioxide (SiO2)
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Cryptocrystalline Quartz (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chrysoprase
Chalcedony (cryptocrystalline SiO2 variety)
Mineral
Green Apophyllite
Fluorapophyllite-(K), KCa4(Si8O20)(F,OH)·8H2O
mineral
Quartz (Chert/Chalcedony Variety)
Silicon Dioxide (SiO2)
mineral
Jasper (specifically Chert/Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Rainbow Moonstone
White Labradorite (formula: (Na,Ca)(Al,Si)4O8)
mineral
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Chert (specifically Flint)
Silicon Dioxide (SiO2)
sedimentary
Leopardite
Quartz porphyry / Quartz monzonite with manganese oxide spots
igneous
Polished reddish-brown gemstone, likely carnelian
Carnelian: chalcedony, microcrystalline quartz (SiO₂), colored mainly by iron oxides
gemstone
Moonstone (Grey)
Feldspar (variety Orthoclase/Adularia) with the formula (K,Na)AlSi3O8
mineral
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Polished brown jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Honey Calcite (Orange Onyx)
Calcium Carbonate (CaCO3)
mineral
Chert (specifically Gray Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Chalcedony (Tumbled/Cabochon)
Silicon dioxide (SiO2)
mineral