Rock Identifier

Category

Mineral Specimen

Browse mineral specimen specimens identified by the Rock Identifier community.

Learn about Mineral Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Morganite Crystal

Morganite Crystal

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

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

Banded Jasper

Silicon Dioxide (SiO2) with impurities

Amethyst in Matrix (Silicon Dioxide with Iron Impurities (SiO2)) — mineral

Amethyst in Matrix

Silicon Dioxide with Iron Impurities (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with Iron Oxide)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron Oxide)

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

Amethyst

Amethyst (Silicon Dioxide - SiO2)

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

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Blue Lace Agate (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate

Silicon Dioxide (SiO2)

Tektite (Indochinite) (Tektite (impactite), primarily high-silica glass (SiO2)) — igneous

Tektite (Indochinite)

Tektite (impactite), primarily high-silica glass (SiO2)

Amethyst Quartz (Amethyst (SiO2 with Iron impurities)) — mineral

Amethyst Quartz

Amethyst (SiO2 with Iron impurities)

Sunstone (Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)) — mineral

Sunstone

Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace rutile/dumortierite) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace rutile/dumortierite

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

Moonstone (Orthoclase Feldspar)

(K,Na)AlSi3O8

Heliotrope (Bloodstone) (Silicon dioxide (SiO2) with inclusions) — mineral

Heliotrope (Bloodstone)

Silicon dioxide (SiO2) with inclusions

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

Septarian Nodule

Septarian Concretion (Calcium Carbonate/Aragonite/Calcite)

Amethyst (Tumbled) (Purple Quartz (SiO2 with iron impurities and irradiation)) — mineral

Amethyst (Tumbled)

Purple Quartz (SiO2 with iron impurities and irradiation)

Labradorite (Dark Matrix) (Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite (Dark Matrix)

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

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

Amethyst

Amethyst (Silicon Dioxide - SiO2 with Iron impurities)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

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

Rose Quartz

Quartz (Silicon Dioxide) - SiO2

Ruby in Zoisite (Anyolite (Zoisite with Corundum) Member of the Epidote Group) — metamorphic

Ruby in Zoisite

Anyolite (Zoisite with Corundum) Member of the Epidote Group

Jasper (specifically Yellow/Red Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (specifically Yellow/Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Amazonite (Amazonite (K(AlSi3O8))) — mineral

Amazonite

Amazonite (K(AlSi3O8))

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

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Flower Agate (Cherry Blossom Agate) (Chalcedony (SiO2) with Opaque Inclusions) — mineral

Flower Agate (Cherry Blossom Agate)

Chalcedony (SiO2) with Opaque Inclusions

Red Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)) — metamorphic

Red Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

White Opal (Common) (Hydrated Silica (SiO2·nH2O)) — mineral

White Opal (Common)

Hydrated Silica (SiO2·nH2O)

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Anyolite (Ruby in Zoisite) (Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))) — metamorphic

Anyolite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))

Chalcedony (Agate/Carnelian variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO2)

Tiger's Eye (Brown/Dark variety) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye (Brown/Dark variety)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Copper Ore with Malachite and Chalcocite (Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)) — mineral

Copper Ore with Malachite and Chalcocite

Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)

Moss Agate (Chalcedony (SiO2 with inclusions)) — mineral

Moss Agate

Chalcedony (SiO2 with inclusions)

Lepidolite in Quartz (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2) — mineral

Lepidolite in Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2

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

Banded Agate (Chalcedony)

Silicon Dioxide (SiO2)

Gold Nugget (Placer Gold) (Native Gold (Au)) — mineral

Gold Nugget (Placer Gold)

Native Gold (Au)

Ferruginous Quartz (Iron-stained Quartz) (Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)) — mineral

Ferruginous Quartz (Iron-stained Quartz)

Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)

Turquenite (Dyed Howlite) (Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)) — mineral

Turquenite (Dyed Howlite)

Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)

Weathered, iron-stained quartz-rich pebble (uncertain identification) (Microcrystalline quartz, SiO₂, with iron-oxide/hydroxide staining and dark matrix inclusions) — mineral

Weathered, iron-stained quartz-rich pebble (uncertain identification)

Microcrystalline quartz, SiO₂, with iron-oxide/hydroxide staining and dark matrix inclusions