Blue tumbled glass-like specimen; likely blue slag glass
Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image
mineral
Category
Man Made Alloy (Metallic)
Browse man made alloy (metallic) specimens identified by the Rock Identifier community.
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Diamond
Carbon (C)
gemstone
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
mineral (synthetic)
Pyrite
Iron Sulfide (FeS2)
mineral
Titanium Coated Aura Quartz (Apple Aura Quartz)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating
Mineral (Man-modified)
Mixed gemstone bead bracelet
Likely rose quartz, amethyst, and possibly rhodonite or lepidolite beads
gemstone
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Likely iron meteorite (stony-iron or weathered iron-rich meteorite)
Provisional identification: meteoritic Fe–Ni alloy, mainly kamacite/taenite; exact classification requires chemical and petrographic testing
meteorite
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Manufactured Glass (Simulant)
Beryl (Aquamarine variety)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Amber Inlay Jewelry
Fossilized Resin (C10H16O)
Organic Gemstone (Biogenic)
Slate
Metamorphic pelitic rock
metamorphic
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Carved Stone Turtle
Carved Soapstone and Quartz
mineral
Green glassy mineral specimen, likely rough emerald or green fluorite
Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph
mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Lapis Lazuli
Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
Metamorphic rock
Pyrite
Iron Disulfide (FeS2)
mineral
Possible iron-rich meteorite or hematite-rich terrestrial stone
Unconfirmed; candidates include iron meteorite (Fe–Ni alloy) or hematite/magnetite (Fe₂O₃/Fe₃O₄)
meteorite
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Man-made byproduct (often mistaken for Obsidian or Emerald)
Larimar
Pectolite
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral (man-enhanced)
Diamond
Carbon (C)
gemstone
Diamond
Native Carbon (C)
gemstone
Diamond (or Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Diamond (in a jewelry setting)
Carbon (C)
mineral
Cassiterite (Tin Ore)
Cassiterite (Tin(IV) Oxide, SnO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Beryl (likely Aquamarine)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Celestine (Celestite)
Celestine (Strontium Sulfate, SrSO4)
mineral
Diamond (in Jewelry Setting)
Carbon (C)
gemstone
Asphalt Pavement (with aggregate)
Asphalt concrete
man-made composite