Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
mineral
Category
Man Made Material
Browse man made material specimens identified by the Rock Identifier community.
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Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Diamond
Carbon (C)
gemstone
Diamond
Carbon (C)
gemstone
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Faience and Carnelian in Egyptian Revival Jewelry
Faience (quartz frit) and Carnelian (chalcedony, SiO2)
gemstone
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
man-made glass
Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation
Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass
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
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
mineral
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Non-geological
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Likely slate
Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz
metamorphic
Polished greenstone/serpentine pebble (probable)
Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile); possible accessory olivine or chlorite
metamorphic
Polished blue calcite sphere (tentative identification)
Calcite, CaCO₃; blue color generally results from trace impurities or inclusions
mineral
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
mineral
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Hematite Beads
Hematite (Fe2O3)
Mineral
Blue glass-like bead or gemstone keychain ornament
Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image
gemstone
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Slate
Metamorphic Pelitic Rock
metamorphic
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
man-made glass
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
man-made glass
Diamond
Native Carbon (C)
gemstone
Moissanite
Silicon Carbide (SiC)
mineral
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
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
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Coquina
Bioclastic Limestone
sedimentary
Cobalt Glass Slug (Man-made Glass)
Amorphous Silica with Cobalt Oxide (SiO2 + CoO)
mineraloid
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Ruby in Matrix
Corundum (Al2O3)
mineral
Slate
Metamorphic Pelitic Rock
metamorphic
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Chert or Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Exposed aggregate concrete (stone-chip surface)
Portland-cement concrete containing natural aggregate; not a natural rock
sedimentary
Polished stromatolite (likely fossilized microbial mat)
Fossil stromatolite; chiefly microcrystalline quartz (SiO₂), commonly replacing carbonate
fossil
Coquina
Bioclastic Limestone
sedimentary
Blue chalcedony cabochon (probable)
Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂
gemstone
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary