Blue Goldstone
Man-made glass with suspended copper, cobalt, or manganese particles
man-made glass
Category
Man Made Material (Constructed)
Browse man made material (constructed) specimens identified by the Rock Identifier community.
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Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Mineral (Man-made glass)
Granite with Cupules / Bedrock Mortars
Granite (felsic intrusive plutonic rock)
igneous
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Coquina
Bioclastic Limestone
sedimentary
Red Granite
Phaneritic Plutonic Rock (High Potassium Feldspar)
igneous
Dyed Blue Agate (Dragon Vein Agate)
Silicon Dioxide (SiO2) with artificial cobalt/organic dyes
mineral
Diamond
Native Carbon (C)
mineral
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Man-made object (Simulant)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
mineral
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Asphalt Pavement (with aggregate)
Asphalt concrete
man-made composite
Hematite
Iron(III) oxide (Fe2O3)
mineral
Green Agate
Silicon dioxide (SiO₂)
mineral
Diamond
Carbon (C)
gemstone
Diamond
Carbon (C)
gemstone
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
mineraloid
White Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Opalite
Synthetic Opalised Glass
Mineral (Synthetic / Man-made)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Coquina
Bioclastic Limestone
sedimentary
Metallic sulfide mineral fragment, likely galena
Galena (lead sulfide, PbS), tentative identification
mineral
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Sea Glass
Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature
mineral
Raw quartz crystal
Quartz (silicon dioxide, SiO₂), likely milky or included quartz
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
man-made glass
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Diamond
Native Carbon (C)
gemstone
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Travertine
Calcium Carbonate (CaCO3)
sedimentary
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock