Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Jasper
Silicon dioxide (SiO2)
sedimentary
Common Opal
Amorphous Hydrated Silica (SiO2·nH2O)
mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Blue Topaz
Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)
mineral
Jasper Pebble
Tumbled Jasper (Microcrystalline Quartz, SiO2)
sedimentary
Green Chert (Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Ammonite Fossil (Polished Section)
Ammonoidea (typically mineralized with Calcite CaCO3)
sedimentary
Pegmatite
Granitic Pegmatite
igneous
Almandine Garnet
Iron aluminum silicate - Fe3Al2(SiO4)3
metamorphic
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Carnelian (a variety of Chalcedony)
Silicon dioxide (SiO2) with iron oxide impurities
mineral
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)
igneous
Kunzite (Pink Spodumene)
Spodumene, LiAl(SiO3)2
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Rough Gemstone Grains (Mixed Sapphires and Quartz)
Corundum (Al2O3) and Quartz (SiO2)
mineral
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Amethyst (Quartz Variety)
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
mineral
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Turquoise
CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)
mineral
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Amber (Copal)
Fossilized Tree Resin
mineraloid
Ruby
Corundum (Al2O3)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Chert (Jasper)
Microcrystalline quartz (SiO2)
sedimentary
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Turquoise
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
metamorphic
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Chrysoprase
Chrysoprase (a variety of Chalcedony, SiO₂)
Mineral
Sunstone
Aventurine Feldspar (composition: (Ca,Na)((Al,Si)2Si2O8))
mineral
Amber
Succinite / Fossilized Tree Resin
fossil
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper
SiO2 (Silicon Dioxide with Iron Oxide impurities)
sedimentary
Moonstone
Potassium aluminum silicate (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral