Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Blue Dyed Agate Geode (Slice)
Silicon Dioxide (SiO2) - Chalcedony / Quartz
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2) with various iron-oxide inclusions
Fluorite
Calcium fluoride (CaF2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
Phantom Quartz (Chlorite Inclusion)
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Al)6(Si,Al)4O10(OH)8
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
Tiny amber-colored crystal fragment
Indeterminate; possibly quartz, feldspar, mica, or a sulfide mineral
Tiger's Eye (dark/grey variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)
Silicon Dioxide (SiO2) with various inclusions
Gold in Matrix
Native Gold (Au)
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Amethyst
Silicon dioxide (SiO2)
Diamond (in Jewelry Setting)
Carbon (C) - Isometric-Hexoctahedral
Turquoise cabochon jewelry
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
Quartz Pebbles
Silicon Dioxide (SiO2)
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
Chalcedony (Agate / Moss Agate)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), $SiO_2$
Yellow Jasper
Chalcedony (Silicon Dioxide with Iron inclusions), SiO2
Pyrite
Iron Sulfide (FeS2)
Blue Quartzite
Metamorphic Rock (rich in Quartz, SiO2 with inclusions of Dumortierite or Magnesio-riebeckite)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz (Smoky Quartz with inclusions)
Silicon Dioxide (SiO2)
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
Shark Tooth Fossil
Carcharhiniformes or Lamniformes (order level fossil)
Rough amber-like brown mineral specimen
Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
Smoky Quartz (with complementary stones in jewelry setting)
Smoky Quartz (Silicon Dioxide - SiO2)
Amazonite
K(AlSi3O8)
Fossilized Shell
Invertebrate fossil (Bivalvia or Brachiopoda)
Larimar
Pectolite (NaCa2Si3O8(OH))
Seven Chakra Bonded Stone
Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz
Lapis Lazuli (polished cabochon/sphere)
Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)
Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
Agate (Bead Form)
Agate (Cryptocrystalline Quartz, SiO2)
Lapis Lazuli
Sodalite-rich metamorphic rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Botryoidal Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)