Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Category
Metamorphic
Browse metamorphic specimens identified by the Rock Identifier community.
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Green Tourmaline
Elbaite - Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
mineral
Pink Thulite (in Pumice-like texture)
Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)
metamorphic
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Dearest Jewelry (Multigemstone)
Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)
Mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Plagioclase Feldspar
NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Quartz (Milky Quartz/Citrine Type)
Silicon Dioxide (SiO2)
mineral
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Granitic Pegmatite (Muscovite and Quartz)
Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)
igneous
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite mica)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Jadeite Jade
Sodium Aluminum Silicate (NaAlSi2O6)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Aventurine and Amazonite
Silicon Dioxide (SiO2) with inclusions and Microcline (KAlSi3O8)
Mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
mineral
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
mineral
Quartz (Clear Quartz and Rose Quartz variants)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Smoky or Clear variety with inclusions)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral