Rock Identifier

Category

Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)

Browse organic gemstone (not a rock or mineral in the traditional sense, but bio mineralized material) specimens identified by the Rock Identifier community.

Pegmatite (Granitic Pegmatite) — igneous

Pegmatite

Granitic Pegmatite

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Amethyst (SiO2 (Silicon Dioxide)) — mineral

Amethyst

SiO2 (Silicon Dioxide)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Aquamarine (Beryl (Be3Al2Si6O18 with Iron traces)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with Iron traces)

Labradorite (Gray Feldspar) ((Ca, Na)(Al, Si)4O8) — mineral

Labradorite (Gray Feldspar)

(Ca, Na)(Al, Si)4O8

Citrine (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide, SiO2)

Amethyst (Raw Quartz) (Amethyst (Silicon Dioxide with Iron impurities, SiO2)) — mineral

Amethyst (Raw Quartz)

Amethyst (Silicon Dioxide with Iron impurities, SiO2)

Rose Quartz (SiO2 (Silicon Dioxide)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Yellow Quartz (Citrine or Yellow Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Dearest Ring (Gemstones) (Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)) — mineral

Dearest Ring (Gemstones)

Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)

Banded Calcite (often commercially called Mexican Onyx) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Banded Calcite (often commercially called Mexican Onyx)

Calcite (Calcium Carbonate, CaCO3)

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

Chalcedony (Carnelian variety)

Silicon Dioxide (SiO2)

Red Jasper (Jasper (Silicon Dioxide) - SiO2) — mineral

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Pegmatite (Granitic Pegmatite) — igneous

Pegmatite

Granitic Pegmatite

Clear Quartz Crystal (Likely Golden Healer/Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal (Likely Golden Healer/Iron-Stained)

Silicon Dioxide (SiO2)

Aquamarine (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Ruby (Corundum) (Aluminum oxide (Al2O3) with Chromium traces) — mineral

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Quartz (Quartzite) (Silicon Dioxide (SiO2)) — metamorphic

Quartz (Quartzite)

Silicon Dioxide (SiO2)

Garnet in Matrix (Almandine Garnet (Fe3Al2(SiO4)3)) — metamorphic

Garnet in Matrix

Almandine Garnet (Fe3Al2(SiO4)3)

Ruby (Raw Corundum) (Corundum (Al2O3:Cr)) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3:Cr)

Sunstone (Heliolite (Oligoclase or Orthoclase Feldspar), (Ca,Na)(Al,Si)4O8) — mineral

Sunstone

Heliolite (Oligoclase or Orthoclase Feldspar), (Ca,Na)(Al,Si)4O8

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Amethyst Geode (Amethyst (Silicon Dioxide, SiO2)) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide, SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye (Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite) — Mineral

Tiger's Eye

Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads) (BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel) — mineral

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Ruby (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby

Corundum (Al2O3 with Chromium trace)

Sodalite (Sodalite Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite Na8(Al6Si6O24)Cl2

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Quartz (SiO2 (Silicon Dioxide)) — mineral

Quartz

SiO2 (Silicon Dioxide)

Milky Quartz with Iron Inclusions (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Crystalline Silicon Dioxide (SiO2)