Composite Turquoise or Reconstituted Turquoise with Copper inclusions
CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes
mineral
Category
Mineral (Man Made Composite)
Browse mineral (man made composite) specimens identified by the Rock Identifier community.
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Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Mineral (Man-made glass)
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Connemara Marble
Calcitic Marble / Serpentinite composite
metamorphic
Turquoise ring (likely stabilized or imitation turquoise)
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact material is uncertain from the image
gemstone
Polished malachite slab
Malachite, Cu₂CO₃(OH)₂; likely polished and possibly resin-stabilized
mineral
Possible weathered basalt or slag fragment
Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image
igneous
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Feldspar-Quartz Rock (likely Pegmatite or Granite)
Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)
igneous
Sandstone
Sandstone (clastic sedimentary rock composite)
sedimentary
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Synthetic (glass)
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Cobalt Glass Slug (Man-made Glass)
Amorphous Silica with Cobalt Oxide (SiO2 + CoO)
mineraloid
Turquoise cabochon (likely stabilized or imitation)
Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Crushed Granite and Quartz Gravel
Composite Igneous and Silicate Rock Aggregate
igneous
Beaded mineral/crystal jewelry (likely turquoise and coral accents)
Variable; blue beads may be turquoise (CuAl6(PO4)4(OH)8·4H2O), with possible dyed howlite, glass, or composite materials
gemstone
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Cullet Glass (Man-made Glass Slag)
Amorphous Silica (SiO2) with chemical additives
Mineraloid
Pearl (likely Freshwater or Akoya Cultured)
Aragonite / Conchiolin composite (CaCO3)
Mineralloid (Organic gemstone)
Tumbled opalite (likely synthetic glass)
Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species
gemstone
Tumbled turquoise cabochon
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly stabilized or dyed material
mineral
Purple Turquoise (Composite Mojave Turquoise)
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate composite)
mineral
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
mineral
Native Silver
Silver (elemental Ag)
mineral
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Anthropogenic (Man-made artifact)
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
mineraloid / anthropogenic (man-made origin)
Carved Gemstone Mushroom
Quartz / Feldspar composite (Carved lapidary art)
gemstone
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
mineraloid
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Wood Paneling
Engineered Wood / Plywood Paneling
not a rock
Glass / Silicon Dioxide (Man-made)
SiO2 (Amorphous Silicon Dioxide)
Amorphous Solid
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Polished blue calcite sphere (tentative identification)
Calcite, CaCO₃; blue color generally results from trace impurities or inclusions
mineral
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Polished blue-green glassy slag or coated mineral fragment
Most likely man-made colored glass/slag; exact composition cannot be determined visually
mineral
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Polished serpentine-rich stone (likely serpentine jasper or “rainforest jasper”)
Serpentine-group minerals, chiefly antigorite/lizardite, with iron oxides and silica-rich rock matrix
metamorphic