Rock Identifier

Category

Metamorphic (Localized) Or Sedimentary

Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.

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

Ruby

Corundum (Al2O3 with Chromium traces)

Agate (Polished Nodule) (Agate (Silicon Dioxide, SiO2)) — mineral

Agate (Polished Nodule)

Agate (Silicon Dioxide, SiO2)

Lapis Lazuli (Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)) — metamorphic

Lapis Lazuli

Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)

Black Tourmaline (Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)) — mineral

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)

Milky Quartz (Silicon Dioxide (SiO2)) — Mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granitic Pegmatite (Muscovite and Quartz) (Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)) — igneous

Granitic Pegmatite (Muscovite and Quartz)

Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)

Yellow Aventurine (Quartzite (formula: SiO2 with inclusions)) — metamorphic

Yellow Aventurine

Quartzite (formula: SiO2 with inclusions)

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

Quartz / Quartzite

Silicon Dioxide (SiO2)

mineral / metamorphic

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Garnet (specifically Almandine or Pyrope) (Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3) — mineral

Garnet (specifically Almandine or Pyrope)

Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)) — mineral

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Quartz (Clear Quartz and Rose Quartz variants) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

Schist with Quartz Vein (Mica Schist with Crystalline Quartz (SiO2)) — metamorphic

Schist with Quartz Vein

Mica Schist with Crystalline Quartz (SiO2)

Quartz with Mica (likely Muscovite) (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride) — igneous/metamorphic

Quartz with Mica (likely Muscovite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride

igneous/metamorphic

Star Ruby (Corundum (Al2O3 with chromium and rutile inclusions)) — mineral

Star Ruby

Corundum (Al2O3 with chromium and rutile inclusions)

Yellow Aventurine (Quartz (SiO2) with iron-bearing inclusions) — mineral

Yellow Aventurine

Quartz (SiO2) with iron-bearing inclusions

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

Citrine

Citrine (Silicon Dioxide - SiO2)

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

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Garnet (likely Almandine or Pyrope) (Garnet Group, Nesosilicates (Complex chemistry, e.g., Almandine: Fe3Al2Si3O12)) — mineral

Garnet (likely Almandine or Pyrope)

Garnet Group, Nesosilicates (Complex chemistry, e.g., Almandine: Fe3Al2Si3O12)

Quartz (Water-worn Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Water-worn Pebble)

Silicon Dioxide (SiO2)

Pyrite (on Quartz/Sulfide matrix) (Iron Sulfide (FeS2)) — mineral

Pyrite (on Quartz/Sulfide matrix)

Iron Sulfide (FeS2)

Green Quartz (Aventurine) (Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Quartz (Aventurine)

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

Pink Feldspar (Orthoclase Feldspar (KAlSi3O8)) — mineral

Pink Feldspar

Orthoclase Feldspar (KAlSi3O8)

Milky Quartz (Water-Worn Pebble) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Water-Worn Pebble)

Silicon Dioxide (SiO2)

White Sapphire (Corundum (Al2O3)) — mineral

White Sapphire

Corundum (Al2O3)

Quartz (Gravel Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Gravel Pebble)

Silicon Dioxide (SiO2)

Quartz (Raw Rose and Milky varieties) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Rose and Milky varieties)

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Ruby (Corundum (Al2O3 with Chromium)) — mineral

Ruby

Corundum (Al2O3 with Chromium)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Moonstone (Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Fuchsite Gneiss (Green Quartzite) (Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2 with Cr replacements)) — metamorphic

Fuchsite Gneiss (Green Quartzite)

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2 with Cr replacements)

Biotite Schist (Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]) — metamorphic

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

Orthoclase Feldspar (Potassium Feldspar) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Garnet (Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3) — Mineral

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions

Unakite (Unakite (Altered Granite)) — metamorphic

Unakite

Unakite (Altered Granite)