Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Category
Mineral, Jewelry
Browse mineral, jewelry specimens identified by the Rock Identifier community.
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Aquamarine (Pendant) and Jasper (Beads)
Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)
mineral
Lava Rock (Basaltic Scoria)
Vesicular Basalt
igneous
Garnet
Nesosilicate group (e.g., Almandine: Fe3Al2(SiO4)3)
mineral
Red faceted gemstone, possibly garnet
Likely almandine garnet, Fe₃Al₂(SiO₄)₃; identity cannot be confirmed from the image
gemstone
Black Onyx
Cryptocrystalline Chalcedony (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Diamond jewelry
Diamond (crystalline carbon, C)
gemstone
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Pink-purple faceted gemstone ring (likely garnet)
Likely almandine–pyrope garnet, (Fe,Mg)₃Al₂(SiO₄)₃; identification from the image is uncertain.
gemstone
Malachite
Copper Carbonate Hydroxide, Cu2CO3(OH)2
mineral
Lapis Lazuli
Complex silicate rock (lazurite, pyrite, calcite)
mineral
Chrysoprase
Chalcedony with nickel impurities (SiO2)
gemstone
Mixed rock and mineral collection
Assorted geological specimens; individual species cannot be reliably identified from the image
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Hematite
Hematite (Fe2O3)
mineral
Green aventurine pendant
Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions
mineral
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
mineral
Almandine Garnet in Matrix or Tumbled Garnet
Iron Aluminum Silicate, Fe3Al2(SiO4)3
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Topaz
Al2SiO4(F,OH)2
mineral
Quartz Geode
Silicon dioxide (SiO2)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Possibly turquoise or chrysocolla
Indeterminate copper-bearing mineral; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O, while chrysocolla is a variable hydrated copper silicate
mineral
Small rounded light-colored mineral pebble
Indeterminate; possibly quartz, feldspar, or calcite
mineral
Amethyst cabochon jewelry
Amethyst, purple variety of quartz (SiO₂)
gemstone
Polished Jasper
Cryptocrystalline quartz, SiO2
mineral
Diamond
C (Carbon)
mineral
Fossilized bone or tooth fragment
Mineralized vertebrate bone; exact taxon indeterminate from image
fossil
Tumbled brown quartz (likely smoky quartz)
Quartz, silicon dioxide (SiO₂); brown coloration may be smoky quartz or iron-stained quartz
mineral
Fluorite (tumbled pebble)
Calcium Fluoride (CaF2)
mineral
Red/orange coral beads (likely dyed or treated coral)
Corallium spp.; calcium carbonate, mainly calcite (CaCO₃)
gemstone
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Corundum
Aluminium oxide, Al2O3
mineral
Quartz (specifically Clear and Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Polished garnet-bearing metamorphic rock (likely garnet schist)
Garnet schist; commonly garnet (often almandine, Fe₃Al₂(SiO₄)₃) in mica-rich rock
metamorphic
Eudialyte with Syenite
Eudialyte: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
igneous
Mixed Gemstones and Minerals
Mixed Silicates and Oxides (Quartz/Amethyst, Aventurine, Sodalite, Chert, Jasper)
mineral
Small brown mineral or rock fragment
Undetermined; the image does not show enough diagnostic detail for reliable identification
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary