Rock Identifier

Category

Organic Gemstone

Browse organic gemstone specimens identified by the Rock Identifier community.

Amazonite (Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)) — mineral

Amazonite

Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)

mineral
Kunzite (variety of Spodumene) (Lithium Aluminum Silicate (LiAlSi2O6)) — mineral

Kunzite (variety of Spodumene)

Lithium Aluminum Silicate (LiAlSi2O6)

mineral
Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

mineral
Schorl (Black Tourmaline) (Sodium Iron Aluminum Borosilicate Hydroxide - NaFe2+3Al6Si6O18(BO3)3(OH)3OH) — mineral

Schorl (Black Tourmaline)

Sodium Iron Aluminum Borosilicate Hydroxide - NaFe2+3Al6Si6O18(BO3)3(OH)3OH

mineral
Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

mineral
Amazonite (Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

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

Blue Apatite

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

mineral
Quartz (specifically Milky or Rose Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky or Rose Quartz variant)

Silicon Dioxide (SiO2)

mineral
Garnet (Almandine variety) (Almandine Garnet (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine variety)

Almandine Garnet (Fe3Al2(SiO4)3)

mineral
Green Aventurine (Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — metamorphic

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

mineral
Lapis Lazuli (Raw) (Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S) — metamorphic

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

metamorphic
Unakite (Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)) — metamorphic

Unakite

Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)

metamorphic
Amazonite (with smoky quartz/red jasper inclusions) (Tectosilicate - Microcline Feldspar (KAlSi3O8)) — Mineral

Amazonite (with smoky quartz/red jasper inclusions)

Tectosilicate - Microcline Feldspar (KAlSi3O8)

Mineral
Obsidian (Volcanic glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

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

Milky Quartz

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Diamond (set in a gold ring) (Carbon (C) - Adamantine cubic carbon) — mineral

Diamond (set in a gold ring)

Carbon (C) - Adamantine cubic carbon

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Lepidolite

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

mineral
Yellow Quartz / Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

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

Quartz (Quartzite)

Silicon Dioxide (SiO2)

metamorphic
Beryl (likely var. Aquamarine or Goshenite) in Matrix (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — mineral

Beryl (likely var. Aquamarine or Goshenite) in Matrix

Beryllium Aluminum Silicate (Be3Al2Si6O18)

mineral
Rough Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Chrysocolla in Malachite (Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)) — mineral

Chrysocolla in Malachite

Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)

mineral
Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral / metamorphic

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

mineral / metamorphic
Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

mineral
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic
Pyrite (Iron Pyrites) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

mineral
Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

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

Labradorite

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

igneous
Amethyst (Amethyst (SiO2 - Silicon Dioxide with iron impurities)) — Mineral

Amethyst

Amethyst (SiO2 - Silicon Dioxide with iron impurities)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

sedimentary
Coal (specifically Bituminous or Anthracite) (Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N) — sedimentary

Coal (specifically Bituminous or Anthracite)

Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N

sedimentary
White Topaz (Topaz [Al2SiO4(F,OH)2]) — mineral

White Topaz

Topaz [Al2SiO4(F,OH)2]

mineral
Peridot (Olivine ((Mg,Fe)2SiO4)) — Mineral

Peridot

Olivine ((Mg,Fe)2SiO4)

Mineral