Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Pearl (Cultured Freshwater)
Calcium Carbonate (Aragonite) - CaCO3
Fossilized Shark Tooth (Megalodon or Carcharocles species fragment)
Otodus megalodon / Carcharocles spp. (Apatite / Calcium Phosphate)
Fluorite
Calcium Fluoride (CaF2)
Chalcedony (Tumbled)
Cryptocrystalline Quartz (SiO2)
Quartz with Iron Oxide Inclusions
Silicon dioxide with limonite/hematite (SiO2)
Carnelian Agate / Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Hematite
Hematite (Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Turquoise (set in silver jewelry)
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
Quartz Mineral
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Hematite
Hematite (Fe2O3)
Silver (S925)
Native Silver (Ag)
Diamond jewelry
Diamond (crystalline carbon, C)
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
Native Gold
Gold (Au)
Green Tourmaline (Verdelite) / Actinolite
Tourmaline group: Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH)4 / Actinolite: Ca2(Mg,Fe)5Si8O22(OH)2
Carnelian
Chalcedony (SiO2)
Lapis Lazuli
Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Mixed Mineral Collection (with Titanium Aura Quartz)
Silicon Dioxide (SiO2) with metallic coatings and various silicates
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
Sapphire
Corundum (Al2O3)
Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), SiO2
Hemimorphite
Hemimorphite (Zn4Si2O7(OH)2·H2O)
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
Quartz (Druzy or Chalcedony variant)
Silicon Dioxide (SiO2)
Fossilized Shark Tooth
Carcharodon (Galeocerdo sp. or Lamniform)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
Diamond (in Jewelry)
Carbon (C)
Aquamarine (Pendant) and Jasper (Beads)
Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Pyrite
Iron Sulfide (FeS2)
Black Sapphire
Corundum (Al2O3 with inclusions of hematite or ilmenite)