Likely diamond accent
Diamond (crystalline carbon, C)
gemstone
Category
Synthetic Or Natural Fiber
Browse synthetic or natural fiber specimens identified by the Rock Identifier community.
Learn about Synthetic Or Natural Fiber in the encyclopedia
View all →
Clear quartz crystal sphere
Quartz (silicon dioxide, SiO₂)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Emerald
Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium
gemstone
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Agate (Polished Sphere)
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
mineral
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
mineral and glass
Strawberry Quartz (or Rose Quartz / Cherry Quartz)
Silicon Dioxide (SiO2) with Lepidocrocite, Hematite, or Goethite inclusions
mineral
Strawberry Quartz and Rose Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Blue-green turquoise (probable)
Turquoise, hydrous copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Colorless faceted gemstone (most likely synthetic cubic zirconia)
Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond
gemstone
Strawberry Quartz (or Sunstone / Tumbled Quartz)
Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions
mineral
Ruby
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Green glassy cabochon, likely dyed or synthetic material
Uncertain; possibly green obsidian, chrysoprase, or synthetic glass
gemstone
Amethyst (Tumbled/Weathered Quartz)
Amethyst (SiO2 with iron impurities)
mineral
Aquamarine in Onyx / Blue Topaz Pendant
Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)
gemstone
Blue Tiger's Eye
Riebeckite (crocidolite variety)
Mineral
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
mineraloid / man-made material
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Tumbled turquoise-like stone
Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)
Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)
mineral
Labradorite cabochon
Labradorite, a calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈
mineral
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Dyed Purple Agate Sliced Tablet
Silicon Dioxide (SiO2), variety Chalcedony
gemstone
Bismuth
Bismuth (Bi)
Mineral
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
mineral
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Red Tiger's Eye
Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)
metamorphic
Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate
Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)
gemstone
Basalt Arrowhead (worked stone)
Aphanitic mafic volcanic rock (Basalt)
igneous
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
metamorphic
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
mineral
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral