Malachite
Malachite (Copper Carbonate Hydroxide) - Cu2CO3(OH)2
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Malachite
Malachite (Copper Carbonate Hydroxide) - Cu2CO3(OH)2
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Blue Goldstone
Aventurine Glass
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Slag
Anthropogenic Vitrification Product / Silicate Slag
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Chert (Jasper Variant likely)
Silicon Dioxide (SiO2)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
Desert Rose (also known as Sand Rose)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions
Quartzite
Quartzite (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe4+ impurities)
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
Granodiorite with Quartz Veining
Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Obsidian
Volcanic Glass (Amorphous SiO2)
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
Grey Granite
Phaneritic Felsic Intrusive Igneous Rock
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
Sunstone
Aventurine Feldspar (Plagioclase Feldspar with inclusions)
Diamond
Carbon (C)
Pearl (with Peridot)
Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4
Granite
Phaneritic Igneous Rock (composed mostly of Quartz, Alkali Feldspar, and Plagioclase)
Granite
Phaneritic plutonic rock (SiO2 typically >69%)
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Diamond
Diamond (pure Carbon, C)
Granite
Phaneritic Plutonic Felsic Rock
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
Diamond (or Diamond Simulant)
Carbon (C)
Native Silver
Silver (Ag)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]