Pyrite
Iron Sulfide (FeS2)
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Citrine
Silicon Dioxide (SiO₂)
mineral
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Obsidian (in jewelry setting)
Volcanic Glass (Amorphous Silica)
igneous
Diamond (in a Gold Jewelry Setting)
Carbon (C)
mineral
Corundum (Ruby Variety)
Corundum (Al2O3)
mineral
Obsidian
Amorphous volcanic glass (primarily SiO2)
igneous
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
sedimentary
Polished blue sodalite cabochons
Sodalite, Na₈Al₆Si₆O₂₄Cl₂
mineral
Lapis Lazuli
Complex silicate rock containing lazurite, pyrite, and calcite
gemstone
Pyrite
Iron Sulfide (FeS2)
mineral
Rhodolite Garnet
Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)
mineral
Nephrite Jade (or Serpentine)
Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals
Mineral/Rock
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron
mineral
Amazonite (Microcline Feldspar)
Microcline Feldspar - KAlSi3O8
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Unakite
Altered Granite (composed of pink orthoclase feldspar, green epidote, and colorless quartz)
igneous
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Likely weathered quartz-rich stone
Probably quartz-bearing sandstone or milky quartz; exact identification requires testing
mineral
Rutilated Quartz (beads)
SiO2 with TiO2 inclusions (Titanium Dioxide inclusions within Quartz)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Bloodstone
Heliotrope (Cryptocrystalline Quartz, SiO2)
mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8) with inclusions
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Carnelian
SiO2 (Silicon Dioxide) - Carnelian variety of Chalcedony
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Polished orbicular jasper (likely ocean jasper)
Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions
mineral
Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Moonstone
Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Smoky Quartz
Smoky Quartz (SiO ₂)
Mineral