Rock Identifier

Category

Organic Gemstone (Not A Mineral)

Browse organic gemstone (not a mineral) specimens identified by the Rock Identifier community.

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Epidote (Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Chrysocolla (Chrysocolla, (Cu, Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Chrysocolla, (Cu, Al)2H2Si2O5(OH)4·nH2O

Fossilized Wood (Petrified Wood) (Silicified Wood (primarily quartz/chalcedony replacing organic matter)) — Sedimentary (with some aspects of mineral replacement)

Fossilized Wood (Petrified Wood)

Silicified Wood (primarily quartz/chalcedony replacing organic matter)

Sedimentary (with some aspects of mineral replacement)

Green Banded Chert (Agate/Jasper) (Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite) — sedimentary

Green Banded Chert (Agate/Jasper)

Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)

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

Labradorite (Carved)

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

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Milky or Smoky Quartz)

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

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)

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

Turquoise

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Olivine (Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)) — mineral

Olivine

Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)

Amazonite (K(AlSi3O8) - Microcline variant) — mineral

Amazonite

K(AlSi3O8) - Microcline variant

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

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

Labradorite (Feldspar)

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

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

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Smoky Quartz Cluster (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

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

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Prehnite (Prehnite Ca2Al2Si3O10(OH)2) — mineral

Prehnite

Prehnite Ca2Al2Si3O10(OH)2

Black Star Diopside (Diopside (CaMgSi2O6) with asterism) — Mineral

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Pink Tourmaline in Quartz Matrix (Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4) in Quartz (SiO2)) — mineral

Pink Tourmaline in Quartz Matrix

Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4) in Quartz (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Dolomite on Prehnite (Saddle-shaped Dolomite) (Dolomite [CaMg(CO3)2] on Prehnite [Ca2Al(AlSi3O10)(OH)2]) — mineral

Dolomite on Prehnite (Saddle-shaped Dolomite)

Dolomite [CaMg(CO3)2] on Prehnite [Ca2Al(AlSi3O10)(OH)2]

Rough Emerald/Green Beryl (Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium) — mineral

Rough Emerald/Green Beryl

Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium

Amazonite (Triklinic Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Triklinic Potassium Feldspar (KAlSi3O8)

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

Amethyst

Silicon Dioxide (SiO2 with iron impurities)

Septarian Nodule (Dragon Stone) (Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)) — sedimentary

Septarian Nodule (Dragon Stone)

Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)

Olivine (Peridot) (Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)) — mineral

Olivine (Peridot)

Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pink Feldspar (Orthoclase) (Orthoclase Feldspar (KAlSi3O8)) — mineral

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

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

Amethyst

Silicon Dioxide (SiO2) with Iron impurities

Chrysocolla (Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)) — mineral

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — Mineral

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)