Sandstone
Arenite (primarily SiO2)
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky quartz with dark host-rock inclusions
Quartz (SiO₂), likely in a granitic or metamorphic matrix
Obsidian
Obsidian (Volcanic Glass)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone Pebbles
Arenite (primarily SiO2 with mineral cement)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Limonite) inclusions
Quartz Pebble
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Quartz (Rose Quartz / Quartz Pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Obsidian
Volcanic Glass (SiO2 + impurities)
Black Obsidian
Volcanic Glass (SiO2 + impurities)
Sandstone or Weathered Conglomerate
Sedimentary Rock (Quartzose Sandstone / Lithic Arenite)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Sandstone (with potential iron mineralization)
Arenite
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Crystal Quartz)
Silicon Dioxide (SiO2)
Clear Quartz Sphere
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Peach/Pink Variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Glazed Ceramic Tile
Fused Silicate-Clay composite
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Milk Quartz (Snow Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)