Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
mineral
Category
Synthetic (Glass)
Browse synthetic (glass) specimens identified by the Rock Identifier community.
Learn about Synthetic (Glass) in the encyclopedia
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Blue-green turquoise (probable)
Turquoise, hydrous copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Anthropomorphic Textile Construct
Diamond ring (likely diamond with gold band)
Diamond, crystalline carbon (C); band appears gold alloy
gemstone
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Ruby (in jewelry)
Corundum (Al2O3 with Chromium traces)
mineral
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
sedimentary
Amethyst (Tumbled/Weathered Quartz)
Amethyst (SiO2 with iron impurities)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Blue-green gemstone ring, likely treated turquoise or synthetic/treated beryl
Indeterminate from image; possibilities include turquoise (CuAl6(PO4)4(OH)8·4H2O), apatite, or treated beryl
gemstone
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
mineral
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Mineraloid (Organic)
Diamond jewelry pendant or cluster
Diamond, crystalline carbon (C), likely mounted in metal
gemstone
Crystal Quartz Beads (likely Clear Quartz)
Quartz (SiO₂)
Mineral
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineraloid
Blue topaz pendant
Topaz (Al₂SiO₄(F,OH)₂), likely treated blue topaz
gemstone
Blue-green opal, likely polished common or synthetic opal
Opal (hydrated amorphous silica, SiO₂·nH₂O); identification from the image is uncertain
gemstone
Faceted red gemstone, likely garnet
Garnet group; probably almandine-pyrope solid solution, (Fe,Mg)₃Al₂(SiO₄)₃
gemstone
Chalcanthite
Copper(II) sulfate pentahydrate (CuSO4·5H2O)
mineral
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Zircon
Zirconium Silicate (ZrSiO₄)
mineral
Sapphire
Corundum (Al2O3)
mineral
Tumbled dalmatian jasper (likely)
Microcrystalline quartz/chalcedony with black amphibole or aegirine inclusions; commonly sold as “dalmatian jasper”
metamorphic
Bismuth crystal
Bismuth (Bi), commonly laboratory-grown
mineral
Dalmatian Stone
Dalmatian Stone (Felsic Igneous Rock)
igneous
Gemstone butterfly brooch/pendant
Likely faceted pink tourmaline or synthetic spinel in gilt metal; exact identification requires testing
gemstone
Diamond
Carbon (C)
mineral
Peridot gemstone pendant
Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)
gemstone
Likely diamond accent
Diamond (crystalline carbon, C)
gemstone
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
mineral
Turquoise ring
Turquoise, hydrated copper–aluminum phosphate (CuAl₆(PO₄)₄(OH)₈·4H₂O)
gemstone
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Synthetic (Ceramic)
Raw ruby (likely corundum)
Corundum, Al₂O₃; red color caused mainly by chromium
gemstone
Anthracite Coal
Anthracite (Carbon ≥ 86%)
sedimentary
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Lapis Lazuli
Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Hematite bead bracelet
Hematite (iron(III) oxide, Fe₂O₃), likely polished specular hematite
mineral
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
mineral