Blue Chalcedony
Silicon Dioxide (SiO2)
Category
Browse organic gemstone (fossilized resin) specimens identified by the Rock Identifier community.
Blue Chalcedony
Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Azurite and Malachite on Matrix
Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Amazonite
Microcline (KAlSi3O8)
Red Carnelian
Carnelian (Silicon Dioxide - SiO2)
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Lavender Jade (Jadeite)
Jadeite - Sodium Aluminum Silicate (NaAlSi2O6)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Carnelian
Carnelian (variety of Chalcedony, SiO2 with iron oxide impurities)
Fire Agate
Chalcedony (Silicon Dioxide, SiO2) with Limonite/Goethite
Carnelian
Carnelian (SiO2 - Silicon Dioxide with Iron Oxide impurities)
Fancy Jasper
Silicon Dioxide (SiO₂)
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
White Topaz
Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Rose Quartz
SiO2 (Silicon Dioxide with trace inclusions)
Milky Quartz
Silicon Dioxide (SiO2)
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
French Bulldog (Blue Variety)
Canis lupus familiaris
Mixed Gemstone Beaded Jewelry
Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)
Unakite
Epidotized Granite
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Garnet (likely Almandine or Pyrope)
Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz in Matrix
Silicon Dioxide (SiO2)
Sunstone
Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
Amethyst (Quartz variety)
Amethyst - SiO2 (Silicon Dioxide with Iron impurities)
Sparkling Druzy Quartz on Matrix
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz
Silicon Dioxide (SiO2)