Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Yellow Topaz (Imperial or Precious Topaz)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Carnelian (Tumbled Pebble)
Quartz (Variety: Carnelian, SiO2)
Carnelian
Quartz (Variety: Chalcedony, SiO2)
Carnelian
SiO2 (Variety of Chalcedony/Quartz)
Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Jasper
Silicon dioxide (SiO2) with impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Orange Calcite
Calcium Carbonate (CaCO3)
Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) with iron oxide impurities
Yellow Chalcedony (Carnelian / Agate Pebbles)
Silicon Dioxide (SiO2)
Quartz (Tumbled/Water-worn pebble)
Silicon Dioxide (SiO2)
Larimar
Pectolite (Sodium Calcium Silicate Hydroxide) - (NaCa2(Si3O8)(OH))
Rough Corundum (likely Sapphire/Zircon-bearing)
Aluminium Oxide (Al2O3)
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
Black Sapphire
Corundum (Al2O3)
Rose Quartz (likely carved)
Rose Quartz (SiO2)
Chert / Flint
Silicon dioxide (SiO2)
Tumbled orange chalcedony (likely carnelian)
Cryptocrystalline quartz, SiO₂; carnelian is orange-red chalcedony colored mainly by iron oxides
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
Chevron Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Carnelian
Carnelian (SiO2 - Silicon Dioxide with Iron Oxide impurities)
Onyx
Chalcedony (SiO2) with parallel banding
Quartz Pebble
Silicon Dioxide (SiO2)
Agate
Chalcedony (Cryptocrystalline variety of Quartz, SiO2)
Moonstone
Orthoclase (KAlSi3O8), a variety of potassium feldspar
Jasper
Jasper (Silicon Dioxide, SiO2)
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Yellow Jasper
Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)
Raw Garnet (Hessonite / Spessartine)
Silicate mineral group (X3Y2(SiO4)3)
Feldspar
Potassium Feldspar (KAlSi3O8)
Chrysocolla
Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O
Tumbled red jasper or carnelian
Cryptocrystalline quartz (chalcedony), SiO₂, likely iron-oxide colored
Carnelian (red chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored
Carnelian (red chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored variety
Carnelian
Silicon Dioxide (Chalcedony variety)
Tumbled Agate (Dyed Blue)
Silicon Dioxide (Chalcedony variety)
Tumbled Amethyst
Silicon Dioxide (Quartz variety)