Green Quartz / Chrysoprase / Sea Glass
Silicon Dioxide (SiO2)
mineral
Category
Not A Natural Rock (Man Made Composite)
Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.
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Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
metamorphic
Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
man-made/construction material
Purple Turquoise (Composite Mojave Turquoise)
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate composite)
mineral
Tiger Iron
Composite rock (Quartz, Tiger's Eye, Hematite, and Jasper)
metamorphic
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Carborundum (Silicon Carbide)
Silicon carbide (SiC)
mineral
Copper Composite Turquoise (Purple and Blue)
Composite Hydrous copper aluminum phosphate with bronze/copper matrix binding
gemstone
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Swirled Agate Bead
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Unakite
Unakite (Altered Granite composed of Orthoclase KAlSi3O8, Epidote Ca2(Al, Fe)3(SiO4)3(OH), and Quartz SiO2)
metamorphic
Diamond (in Jewelry Setting)
Carbon (C)
gemstone
Obsidian
Volcanic Glass (Amorphous Silicon Dioxide)
igneous
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
sedimentary
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
sedimentary
Sandstone
Arenite (variable SiO2 composition)
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar-Mica composite)
igneous
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Diamond (in a jewelry setting)
Carbon (C)
mineral
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
sedimentary
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Granite
Intrusive Felsic Igneous Rock (primarily Quartz and Feldspar)
igneous
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
mineral
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Banded Sandstone
Arenite with Liesegang banding
sedimentary
Tektite
Impactite (Natural Silicate Glass)
meteorite
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid