Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
Category
Browse metamorphic, likely sedimentary with quartz veins specimens identified by the Rock Identifier community.
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
Smoky Quartz (Faceted Beads)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Red Jasper (with Quartz veining)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Almandine Garnet in Matrix
Almandine (Fe3Al2(SiO4)3)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Quartzite with Quartz Vein
Metamorphosed Quartz-rich Arenite (SiO2)
Brecciated Jasper
Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
Precious Opal
Hydrated Silica (SiO2·nH2O)
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Druzy Chalcedony/Quartz on Fluorite core
Silicon Dioxide (SiO2) on Calcium Fluoride (CaF2)
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
Aventurine (likely Green Aventurine)
Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (SiO2)
Milky Quartz (Water-worn Pebble)
Silicon Dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Blue Quartzite)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon dioxide (SiO2)
Quartz (specifically Milky/Gray Quartz vein)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Chert (Flint Pebbles)
Microcrystalline quartz (SiO2)
Chert (Tan/Yellow variety)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with iron oxide Fe2O3 cement)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Chert (Yellow or Ochre Jasper variant)
Microcrystalline Quartz (SiO2)
Clear/White Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Serpentine with Quartz Vein
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4 with SiO2 veins
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
River Cobble (likely Quartzite)
Metamorphosed Sandstone (SiO2)