Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Carnelian
Silicon Dioxide, variety of chalcedony (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Dyed Blue Agate Slice
Silicon Dioxide (SiO2) - Variety Agate
Agate
Cryptocrystalline Silicon Dioxide (SiO2)
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
Quartzite Pebble
Metamorphic Quartz-rich Rock (SiO2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Rose Quartz
Silicon Dioxide (SiO2) with Trace Inclusions
Jasper
Silicon Dioxide (SiO2)
Sandstone (Nut-stone / Cup-stone artifact)
Quartz Arenite / Worked Sedimentary Rock
Quartz (Clear Quartz / Rose Quartz)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Green Quartz
Silicon Dioxide (SiO2)
Massive Quartz
Silicon dioxide (SiO2)
Native Gold (in earring form)
Gold (Au)
Quartz Pebble
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Quartz and Mixed Sedimentary Rocks
Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies
Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
Gneiss
High-grade metamorphic rock (Gneiss)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Clastic Sedimentary Rock
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz crystals
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primary)
Quartz Geode
Silicon Dioxide (SiO2) in Host Rock
Milky quartz
Quartz (silicon dioxide, SiO₂)
Sandstone (River Cobble)
Clastic Sedimentary Rock (primarily Quartz with Feldspar)
Goldstone and pink quartz bead strands
Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)