Blue Sapphire
Corundum (Al2O3)
Category
Browse non geological specimens identified by the Rock Identifier community.
Blue Sapphire
Corundum (Al2O3)
Quartz
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Pyrite
Iron Disulfide (FeS2)
Milky Quartz (Druzy Geode fragment)
Silicon Dioxide (SiO2)
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Quartz Geode (Water-worn)
Silicon Dioxide (SiO2)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Clear Quartz (Carved Dragon)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Peacock Ore
Bornite (Cu5FeS4)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Blue Sapphire
Corundum (Al2O3 with trace Titanium/Iron)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Granite
Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)
Gold Flake
Native Gold (Au)
Sandstone
Arenite (composed primarily of Quartz: SiO2)
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Quartzite (Gold/Yellow)
Quartzite (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Pyrite
Iron Disulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Granite
Phaneritic plutonic rock (composed of quartz, alkali feldspar, and plagioclase)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Granite
Granite (Phaneritic igneous rock)
Sandstone
Arenite (primarily SiO2)
Pyrite
Pyrite (Iron sulfide, FeS₂)
Red Jasper
Jasper (a variety of Chalcedony, SiO₂ with impurities)
Gneiss (Pebble)
Gneiss
Porphyritic Basalt (or Andesite) Pebble
Porphyritic Mafic Volcanic Rock
Greenschist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
Que Sera Stone (Llanite)
Rhyolite containing blue quartz and feldspar
K2 Jasper (K2 Granite)
Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)
White Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones