Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Silver (Jewelry form)
Native Silver (Ag)
Quartz (Pebble)
Quartz (SiO₂)
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Diamond (Cluster Ring)
Carbon (C)
Granite
Phaneritic Felsic Intrusive Igneous Rock
Pearl
Aragonite / Calcium Carbonate (CaCO3)
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
Diamond in Kimberlite
Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)
Basalt
Basalt (Mafic volcanic rock)
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Diamond
Carbon (C)
Rough Diamond
Diamond (pure Carbon, C)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Basalt
Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)
Diorite
Diorite
Nephrite Jade
Nephrite
Marble
Metamorphic Limestone (CaCO3)
Rough Diamond
Diamond (pure Carbon, C)
Tektite (Indochinite)
Tektite (Amorphous Silica Glass)
Diorite
Diorite (Intermediate intrusive igneous rock)
Natural Pearl (appearing in a jewelry setting)
Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin
Granite
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Smoky Quartz
Silicon Dioxide (SiO2) with trace aluminum and irradiation
Granite
Granite (Felsic Plutonic Rock)
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Chert (or possibly Flint)
Chert (variant: Flint)
Pearl
Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)
Nacre (Mother of Pearl)
Nacre (Biogenic Aragonite/Calcite composite, CaCO3)
Diamond (in jewelry setting)
Carbon (C)
Granodiorite
Granodiorite
Basalt
Basalt (Mafic volcanic rock)
Smoky Quartz
Silicon Dioxide (SiO2)