Bloodstone (Heliotrope)
SiO2 (Cryptocrystalline Quartz / Chalcedony)
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Bloodstone (Heliotrope)
SiO2 (Cryptocrystalline Quartz / Chalcedony)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Hematite
Hematite (Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Petrified Wood
Silicified Wood (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chalcedony (Agate/Quartz pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Rough Quartz (Smoky or Citrine variant)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Cloudy Quartz
Silicon Dioxide (SiO2)
Satin Spar (Satin Spar Selenite)
Gypsum (CaSO4·2H2O)
Mother of Pearl and Onyx
Aragonite (Mother of Pearl) and Chalcedony (Onyx)
Agate
Silicon dioxide (Chalcedony), SiO2
Agate Geode with Quartz Druzy
Chalcedony (SiO2) and Quartz (SiO2)
Ocean Jasper
Orbicular Jasper / Chalcedony (SiO2)