Rock Identifier

Category

Organic Gemstone (Sedimentary Classification)

Browse organic gemstone (sedimentary classification) specimens identified by the Rock Identifier community.

Blue Apatite (Apatite - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Nobby Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Nobby Hematite (Iron Ore)

Hematite (Fe2O3)

Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Carnelian (Red Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Red Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Red Jasper (beads) (SiO₂ (Silicon Dioxide)) — Mineral, variety of chalcedony (microcrystalline quartz)

Red Jasper (beads)

SiO₂ (Silicon Dioxide)

Mineral, variety of chalcedony (microcrystalline quartz)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Fancy Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Fancy Jasper

Silicon Dioxide (SiO₂)

Lake Superior Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Lake Superior Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Brecciated Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper (Silicon Dioxide (SiO2) with Ferric Iron inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Banded Iron Formation (Jaspillite) (Banded Iron Formation (BIF) / Jaspillite) — sedimentary

Banded Iron Formation (Jaspillite)

Banded Iron Formation (BIF) / Jaspillite

Red Jasper (Silicon dioxide (SiO2) with Iron inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with Iron inclusions

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper (Iron-stained Chert) (Silicon Dioxide (SiO2) with impurities of Iron Oxide) — sedimentary

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Iron Oxide

Turquoise (Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)

Chert (Flint) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Quartz (Milky/Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Carnelian (Agate) (SiO2 (Silicon Dioxide with Iron Oxide impurities)) — mineral

Carnelian (Agate)

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Amethyst with Marcasite accents (Amethyst (Silicon Dioxide SiO2) and Marcasite (Iron Sulfide FeS2)) — mineral

Amethyst with Marcasite accents

Amethyst (Silicon Dioxide SiO2) and Marcasite (Iron Sulfide FeS2)

Red Jasper (Jasper (SiO2) - Silicon Dioxide with Hematic impurities) — sedimentary

Red Jasper

Jasper (SiO2) - Silicon Dioxide with Hematic impurities

Yellow Jasper (Chert variant) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper (Chert variant)

Silicon Dioxide (SiO2)

Red Jasper (Tumbled) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Tumbled)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Jasper (Silicate - SiO2)) — sedimentary

Jasper

Jasper (Silicate - SiO2)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Fancy Jasper (Bloodstone variety) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Fancy Jasper (Bloodstone variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

Druzy Quartz on Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide with Iron Oxide (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide with Iron Oxide (SiO2)

Red Jasper (Jasper (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Jasper (SiO2) with Hematite (Fe2O3) inclusions

Chert (Flint Nodules) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Orthoclase Feldspar (Potassium aluminum silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Amber (Succinite (organic fossilized resin)) — mineraloid

Amber

Succinite (organic fossilized resin)

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)