Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
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Blue cabochon gemstone, likely synthetic glass or dyed stone
Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli
gemstone
Bismuth
Bismuth (Bi)
mineral
Milky quartz (rough quartz fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Opalite
Synthetic Opalised Glass
mineral
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Rainbow Hematite (Titanium Coated)
Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating
mineral
Opalite (Man-made Glass)
Fused glass (typically made of dolomite and metal opacifiers)
Man-made Material / Glass
Likely tumbled or cut quartz/chalcedony fragment
Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz
mineral
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
mineraloid
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
mineral
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Weathered breccia or conglomeratic sandstone
Clastic sedimentary rock, likely carbonate-cemented breccia/conglomerate
sedimentary
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂), likely milky quartz
mineral
Clear quartz sphere
Quartz (silicon dioxide, SiO₂)
mineral
Blue Impression Jasper beads
Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions
gemstone
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
mineral
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
mineral
Obsidian (Blue)
Volcanic Glass (SiO2)
igneous
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Pink Quartz / Sea Glass
Silicon Dioxide (SiO2)
mineral
Breccia Pebble
Sedimentary Breccia
sedimentary
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral
Diamond / Clear Quartz / Glass paste
Carbon (Diamond) / Silicon Dioxide (Quartz)
gemstone
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
mineral
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Rock crystal quartz fragments
Quartz (silicon dioxide, SiO₂)
mineral
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Quartz (likely milky quartz or quartz glass-like fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Black tumbled stone, possibly obsidian
Obsidian (volcanic glass; predominantly SiO₂), identification uncertain from image
igneous
Tumbled opalite (likely man-made glass)
Opalite, a trade name for opalescent glass; not natural opal
mineral
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Faceted clear gemstone, likely quartz or glass imitation
Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests
gemstone