Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Sandstone (Quartzose Sandstone)
Sandstone (SiO2 with various trace minerals)
Agated Chert
Microcrystalline Quartz (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Jasper (or possibly Agate/Chalcedony) beads
SiO2 (Silicon Dioxide)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Chalcedony/Agate nodule)
Silicon dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Quartz Fragment
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Sandstone
Sedimentary Clastic Rock
Sandstone
Arenite (SiO2 principal)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Garnet (Almandine/Pyrope series)
Garnet Group - X3Y2(SiO4)3
Quartz (Milky/Clear Variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite (Potassium Aluminum Silicate Hydroxide), KAl2(AlSi3O10)(OH)2
Chert (variant of Flint)
Chert (SiO2)
Jasper
Jasper (Silicate mineral, SiO2)
Mixed Mineral Specimens
Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)
White Quartz
Silicon Dioxide (SiO2)
Tumbled quartz (likely milky quartz)
Quartz, silicon dioxide (SiO₂)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (primarily SiO2)
Yellow Quartz (or Citrine Quartz)
Silicon Dioxide (SiO2)
Likely quartz fragment
Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock
Red Sandstone
Arenite (Ferruginous Sandstone)
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz (Carved Dragon)
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Agate Slices and Clear Quartz Points
Agate (SiO2 Chalcedony) and Clear Quartz (SiO2 Crystalline)
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
Black Sapphire
Corundum (Al2O3 with iron and titanium impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Mixed Rock and Mineral Collection
Mixed Assemblage (includes Quartz, Jasper, Feldspar, and Turquoise-colored stones)
Milky Quartz
Silicon Dioxide (SiO2)
Blue chalcedony (likely dyed or polished)
Chalcedony, microcrystalline quartz (SiO₂)