Gneiss
Gneiss
metamorphic
Category
Granite
Browse granite specimens identified by the Rock Identifier community.
Learn about Granite in the encyclopedia
View all →
Aquamarine
Beryl (Be₃Al₂Si₆O₁₈)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss
metamorphic
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Granite (including Pegmatite variants)
Phaneritic Plutonic Rock (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Muscovite mica)
Igneous
Rhyolite
Rhyolite (High-silica volcanic rock)
igneous
Labradorite Granite (Blue Pearl)
Anorthosite (dominated by Labradorite feldspar)
igneous
Obsidian (Black)
Obsidian (High-silica volcanic glass)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Coquina / Shelly Limestone
Coquina (Biogenic Limestone)
sedimentary
Rhyolite
Rhyolite (felsic extrusive igneous rock)
igneous
Quartzite with Iron Inclusions
Metamorphosed Sandstone (SiO2 dominated)
metamorphic
Biotite (Black Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Gneiss
Gneiss
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Cobble (with Iron Oxide Staining)
Microcrystalline to Macro crystalline Quartz (SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Gneis
Gneiss (High-grade metamorphic rock)
metamorphic
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Riverstone (Quartzite/Granite Cobble)
Silicon Dioxide (SiO2) based Quartzite or Silicate-rich Granite
metamorphic or igneous
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral