Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Malachite / Copper Ore (Cu2CO3(OH)2) — mineral

Malachite / Copper Ore

Cu2CO3(OH)2

Heliotrope (Bloodstone) (Chalcedony quartz variety (SiO2) with hematite or jasper inclusions) — mineral

Heliotrope (Bloodstone)

Chalcedony quartz variety (SiO2) with hematite or jasper inclusions

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

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Carnelian Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Carnelian Agate

Silicon Dioxide (Chalcedony variety), SiO2

Dumortierite in Quartz (Dumortierite (Al6O3(BO3)(SiO4)3) with Quartz (SiO2)) — mineral

Dumortierite in Quartz

Dumortierite (Al6O3(BO3)(SiO4)3) with Quartz (SiO2)

Fossil Coral (Hexagonaria (or Rugose/Tabulate coral fossilized in calcium carbonate)) — fossil

Fossil Coral

Hexagonaria (or Rugose/Tabulate coral fossilized in calcium carbonate)

Tiger's Eye (SiO2 (Quartz pseudomorph after crocidolite)) — gemstone

Tiger's Eye

SiO2 (Quartz pseudomorph after crocidolite)

Red Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron inclusions

Tumbled Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Tumbled Amethyst

Quartz (Silicon Dioxide, SiO2)

Tiger Iron (Composite rock (Quartz, Tiger's Eye, Hematite, and Jasper)) — metamorphic

Tiger Iron

Composite rock (Quartz, Tiger's Eye, Hematite, and Jasper)

Jasper and Quartz Pebble (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Quartz Pebble

Silicon Dioxide (SiO2) microcrystalline quartz

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Limestone with Fossil Fragment (Bioclastic limestone (Calcium carbonate, CaCO3)) — sedimentary

Limestone with Fossil Fragment

Bioclastic limestone (Calcium carbonate, CaCO3)

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Tumbled Agate (Silicon Dioxide (SiO2)) — gemstone

Tumbled Agate

Silicon Dioxide (SiO2)

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

Labradorite

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

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) — mineral

Epidote

Ca2(Al,Fe)3(SiO4)3(OH)

Petoskey Stone / Fossilized Coral (Hexagonaria percarinata) — fossil

Petoskey Stone / Fossilized Coral

Hexagonaria percarinata

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — mineral

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Green Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Green Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Jasper and Basalt Pebble (Polymineralic lithic pebble) — igneous and sedimentary

Jasper and Basalt Pebble

Polymineralic lithic pebble

igneous and sedimentary

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Bumblebee Jasper (Fibrous Calcite and Quartz with Volcanic Matter (CaCO3 / SiO2)) — mineral

Bumblebee Jasper

Fibrous Calcite and Quartz with Volcanic Matter (CaCO3 / SiO2)

Purpurite (Manganese Iron Phosphate, Mn3+(PO4)) — mineral

Purpurite

Manganese Iron Phosphate, Mn3+(PO4)

Ironstone / Hematite Concretion (Iron oxide / Fe2O3) — sedimentary

Ironstone / Hematite Concretion

Iron oxide / Fe2O3

Pink Opal (Hydrated amorphous silica (SiO2·nH2O)) — gemstone

Pink Opal

Hydrated amorphous silica (SiO2·nH2O)

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

Chrysocolla

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

Sandstone with Iron Oxide Concretions (Quartzose Sandstone with Limonite/Hematite) — sedimentary

Sandstone with Iron Oxide Concretions

Quartzose Sandstone with Limonite/Hematite

Sunstone (Feldspar (Oligoclase)) — mineral

Sunstone

Feldspar (Oligoclase)

Jasper (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

K2 Stone (Azurite in Granite) — igneous

K2 Stone

Azurite in Granite

Jasper and Quartz (Silicon Dioxide (SiO2)) — sedimentary

Jasper and Quartz

Silicon Dioxide (SiO2)

Fossil Coral (Scleractinia (Stony Coral) fossil) — fossil

Fossil Coral

Scleractinia (Stony Coral) fossil

Amazonite (Microcline (Potassium Feldspar), KAlSi3O8) — mineral

Amazonite

Microcline (Potassium Feldspar), KAlSi3O8

Quartz Pebble (with Dark Volcanic/Sedimentary Inclusion) (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble (with Dark Volcanic/Sedimentary Inclusion)

Silicon Dioxide (SiO2)

Quartz with Tourmaline (Silicon Dioxide with Schorl (SiO2 + NaFe3Al6(Si6O18)(BO3)3(OH)4)) — mineral

Quartz with Tourmaline

Silicon Dioxide with Schorl (SiO2 + NaFe3Al6(Si6O18)(BO3)3(OH)4)

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

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Chevron Amethyst (Silicon Dioxide (Quartz variety, SiO2)) — mineral

Chevron Amethyst

Silicon Dioxide (Quartz variety, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Script Stone (Calcareous Sandstone / Limestone with fossilized inclusions) — sedimentary

Script Stone

Calcareous Sandstone / Limestone with fossilized inclusions