Gneiss
Gneiss
Category
Browse metamorphic or igneous with mineral inclusion specimens identified by the Rock Identifier community.
Gneiss
Gneiss
Mica Schist
Mica Schist (predominantly Muscovite/Biotite)
Milky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Basalt
Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
Dragon Blood Jasper
Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))
Milky Quartz
Silicon Dioxide (SiO2)
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Lepidolite
K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
Milky Quartz (river pebble)
Quartz (Silicon Dioxide, SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride) - Na8(Al6Si6O24)Cl2
Epidosite
Epidosite (predominantly Epidote {Ca2Al2Fe3+Si3O12(OH)} and Quartz {SiO2})
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
Dendritic Agate
Silicon Dioxide (SiO2) with manganese/iron inclusions
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Quartz (White/Milky with Iron Staining)
Silicon Dioxide (SiO2)
Grey Quartz (likely Smoky Quartz or Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
Banded Agate
Silicon Dioxide (SiO2)
Biotite Mica in Quartz
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) in Quartz (SiO2)
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO₂)
Yellow Citrine Quartz
Silicon Dioxide (SiO₂)
Smoky Quartz
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Smoky Quartz (with complementary stones in jewelry setting)
Smoky Quartz (Silicon Dioxide - SiO2)
Citrine
Silicon dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Citrine
Silicon dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Clear Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)