Ruby
Corundum (Al2O3 with Chromium trace)
gemstone
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
mineral
Basalt Breccia
Volcanic Breccia (composed of basaltic clasts in a fine-grained matrix)
igneous
Greenstone (Epidosite/Altered Diorite)
Metabasalt or Meta-andesite / Epidotized Diorite
metamorphic
Quartz (Field Stone)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Basalt River Cobble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Epidote in Matrix (Dragon Stone variant)
Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Carnelian
Carnelian (SiO2)
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Milky Quartz (Water-worn pebble/nodule)
Quartz (Silicon Dioxide - SiO2)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate), (Mg,Fe)2SiO4
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Granite
Granite
igneous
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Sodalite in Feldspar (or Sodalite Syenite / Yooperite-type rock)
Na8(Al6Si6O24)Cl2 (Sodalite) with KAlSi3O8 (Feldspar)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Granite (Micro-specimen)
Plutonic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Granite
Intrusive Felsic Igneous Rock
igneous
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Igneous Rock (Granite)
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Granite (silica-rich intrusive igneous rock)
igneous
Granite cobble
Granite (Felsic Plutonic Rock)
igneous
Indigo Gabbro
Gabbro (composed of plagioclase feldspar, pyroxene, and olivine)
igneous
Granite
Intrusive Felsic Igneous Rock (primarily Quartz and Feldspar)
igneous
Porphyritic Basalt
Porphyritic Basalt (Silicate Rock)
igneous