Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Category
Synthetic (Not A Rock Or Mineral)
Browse synthetic (not a rock or mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic (Not A Rock Or Mineral) in the encyclopedia
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Ammonite Fossil
Ammonoidea
fossil
Sandstone (likely Quartzose)
Sandstone (Principally SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Conglomerate / Breccia Matrix (Aggregated Rock)
Sedimentary Breccia / Conglomerate
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Desert Rose (Barite Rose / Gypsum Rose)
Barium Sulfate (BaSO4) or Hydrated Calcium Sulfate (CaSO4·2H2O)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Agate
SiO2
Mineral
Ocean Jasper or Orbicular Jasper
SiO2
mineral
Agate
SiO2
Mineral
Banded Agate
SiO2 (Silicon Dioxide)
mineral
Carnelian Agate / Iron-Stained Quartz
SiO2
Mineral
Granite Gneiss
Gneiss (derived from granitic protolith)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Shale
Argillaceous sedimentary rock
sedimentary
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
Mineral/Igneous/Metamorphic association
Dalmatian Stone
Dalmatian Jasper / Aplite
igneous
Granite
Granite
igneous
Likely polished dark stone or glassy mineral bead
Indeterminate; possibly obsidian, hematite, or a dark agate
mineral
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Druze
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Drusy on Matrix
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt with Epidote
Vesicular Basalt with secondary Epidote/Quartz mineral infill
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Granite
Granite
Igneous
Granitic Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic