Turquoise color-bead and Hematite necklace
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Bauxite
Aluminum ore / Hydrated aluminum oxides
sedimentary
Granitic Pegmatite
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)
Igneous
Granite
Intrusive Igneous Rock
igneous
Likely weathered mafic rock (basalt or gabbro)
Basalt–gabbroic rock; chiefly plagioclase feldspar, pyroxene, and possibly olivine
igneous
Bull Quartz (White Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite-bearing Rock
Iron Sulfide (FeS2) associated with host rock
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst ring
Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones
gemstone
Granite
Intrusive Igneous Rock
igneous
Beryl (likely Aquamarine or Heliodor variant)
Beryllium aluminum cyclosilicate (Be3Al2Si6O18)
mineral
Peridot
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Quartz Veinated Sandstone or Siltstone
Silicon Dioxide (SiO2) within a clastic sedimentary matrix
sedimentary
Rounded greenish-gold rock or mineral pebble
Indeterminate; possibly serpentine-rich stone, weathered sulfide, or iron-stained metamorphic rock
mineral
Gold-bearing quartz or ironstone fragment
Quartz (SiO₂) with possible native gold and iron oxides
mineral
Diamond (in a gold setting)
Carbon (C)
mineral
Bauxite
Aluminium ore consisting largely of the minerals gibbsite Al(OH)3, boehmite γ-AlO(OH) and diaspore α-AlO(OH)
sedimentary
Gold
Native Gold (Au)
mineral
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Gold
Native Gold (Au)
mineral
Copper Ore
Cupriferous Rock / Mixed Mineral Matrix
igneous
Quartz-rich hydrothermal mineral specimen, possibly vanadinite-bearing matrix
Quartz (SiO₂) with unidentified red-brown accessory minerals; exact species requires testing
mineral
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Manganese Oxide Crust on Limestone
Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3
sedimentary
Decorative gemstone bracelet or jewelry
Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads
gemstone
Granite
Intrusive igneous rock
igneous
Gossan
Iron-rich regolith (mainly Limonite and Goethite, FeO(OH)·nH2O)
sedimentary
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Native Copper
Native Copper (Cu)
mineral
Likely native metallic mineral specimen
Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore
mineral
Granite
Intrusive igneous rock (Felsic)
igneous
Likely metallic mineral specimens
Probably native iron or iron oxide/hydroxide material; exact identification requires testing
mineral
Amethyst Cluster
Silicon Dioxide (Quartz variety: Amethyst) - SiO2
mineral