Rough Diamond
Diamond (pure Carbon, C)
Category
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Rough Diamond
Diamond (pure Carbon, C)
Eagle Eye Stone (Green Tiger's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Blue Dyed Agate
Silicon Dioxide (SiO2)
Grey Chalcedony (Tumbled)
Chalcedony (SiO2)
Citrine
Silicon Dioxide (SiO2)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Moonstone (specifically White Moonstone or Girasol Quartz)
Potassium aluminum silicate (KAlSi3O8)
Bloodstone (Heliotrope)
Silicon dioxide (SiO2) with Hematite inclusions
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
Amazonite
Amazonite (KAlSi3O8)
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Citrine
Yellow Quartz (SiO2)
Carnelian
Carnelian (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Azurite with Malachite and Limonite
Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2
Malachite
Malachite (Cu2CO3(OH)2)
Diamond
Native Carbon (C)
Dendritic Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Petrified Wood
Silicified Wood (primarily SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Garden Quartz
Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)
Pink Opal
Hydrated silicon dioxide (SiO2·nH2O) with inclusions
Quartz Geode
Silicon Dioxide (SiO2)
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
Labradorite
(Ca,Na)(Al,Si)4O8
Milky Quartz
Silicon Dioxide (SiO2)
Nobby Hematite (Iron Ore)
Hematite (Fe2O3)
Aventurine and Amazonite
Silicon Dioxide (SiO2) with inclusions and Microcline (KAlSi3O8)
Banded Agate (Crazy Lace/Mexican Agate Variety)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with Hematite inclusions
Limonite (vibrant yellowish-brown iron oxide)
Limonite (FeO(OH)·nH2O)
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
Black Opal
Hydrated Silica (SiO2·nH2O)
Quartz Geode
Silicon Dioxide (SiO2)
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
Diamond inlaid in Jewelry
Carbon (C)
Amethyst
Silicon Dioxide with trace Iron (SiO2)
Amethyst
Silicon Dioxide (SiO2) with traces of Iron and Manganese
Magnetite (Small Granule)
Magnetite (Fe3O4)