Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
Category
Browse metamorphic and sedimentary specimens identified by the Rock Identifier community.
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Fairy Stone (Staurolite)
Staurolite (Fe2+2Al9Si4O22(OH)2)
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))
Citrine
Silicon Dioxide (SiO2)
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
Serpentine
Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
Dragon Blood Jasper
SiO2
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
Amazonite
K(AlSi3O8)
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
Sunstone
(Ca,Na)((Al,Si)2Si2)O8 (Plagioclase Feldspar)
Jade (Jadeite/Nephrite)
NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)
Citrine
Silicon Dioxide (SiO2)
White Sapphire
Corundum (Al2O3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Dumortierite Quartz
Al7BO3(SiO4)3O3 (inclusion in SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
Smoky Quartz (Faceted Beads)
Silicon Dioxide (SiO2)
Unakite
Epidotized Granite
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Marble
Recrystallized Calcite (CaCO3)
Quartzite
Quartzite (SiO2)
Green Quartzite (or Green Jasper)
Silica (Silicon Dioxide, SiO2) with inclusions
Unakite
Epidotized Granite
Green Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite (Ferruginous)
Metamorphosed Quartz Sandstone (SiO2 with Fe2O3 impurities)
Schist (Oxidized)
Mica Schist with Iron Oxide staining
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(OH)2
Greenschist / Chloritaform Schist
Chlorite Schist (Group of Silicate Minerals)