Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
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Slag Glass (Cullet)
Amorphous Silica / Glass residue
Man-made byproduct (Non-geological)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Anthropogenic (Man-made material processed by nature)
Sea Glass (Turquoise/Aqua)
Amorphous Silica (SiO2) with transition metal dopants
Anthropogenic (Man-made material processed by nature)
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various metal oxide impurities
Man-made material (Anthro-lithic product)
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Metal / Man-made mineral-like object
Green Glass Cullet / Recycled Glass
Amorphous Silicon Dioxide (SiO2) with various metal oxides
Man-made Glass (Not a natural rock or mineral)
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Man-made byproduct (often mistaken for Obsidian or Emerald)
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
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.
Diamond
Native Carbon (C)
gemstone
Diamond (or Simulant)
Carbon (C)
gemstone
Diamond
Native Carbon (C)
mineral
Diamond
Carbon (C)
gemstone
Cherry Quartz
SiO2 (Silicon Dioxide with iron-rich inclusions/dye)
mineral
Diamond
Native Carbon (C)
mineral
Native Silver
Silver (elemental Ag)
mineral
Granodiorite
Granodiorite
Igneous
Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Diamond
Carbon (C)
gemstone
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Carved Stone Turtle
Carved Soapstone and Quartz
mineral
Diamond (or Diamond Simulant)
Carbon (C)
mineral
Diamond in Kimberlite
Diamond (C in Kimberlite)
igneous
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Diamond
Carbon (C)
gemstone
Larimar
Pectolite
mineral
Gem-set gold ring
Unidentified transparent gemstone, possibly quartz or glass, set in a gold-colored metal ring
gemstone
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Diamond
Native Carbon (C)
gemstone
Diamond (or Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Diamond (in a jewelry setting)
Carbon (C)
mineral
Chert (possibly a worked stone flake)
Microcrystalline quartz, SiO₂
sedimentary
Diamond (in Jewelry Setting)
Carbon (C)
gemstone