Gneiss
Gneiss
Category
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
Gneiss
Gneiss
Quartz (Common Milky Quartz)
Silicon Dioxide (SiO2)
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Hematite
Iron(III) oxide (Fe2O3)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Calcite
Calcium Carbonate (CaCO3)
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite (Cube variety)
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Potassium Feldspar
Orthoclase (KAlSi3O8)
Hematite (Iron Ore)
Hematite (Fe2O3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Quartz (Milky/Crystal variety)
Silicon Dioxide (SiO2)
Quartz Druzy (on Calcedony/Quartz base)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Pyrite
Iron Disulfide (FeS2)
Peacock Ore
Bornite (Cu5FeS4)
Jasper
Silicon dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Unidentifiable Specimen
Undetermined
Yellow Jade (Yellow Chalcedony/Quartz)
Silicon Dioxide (SiO2)
Banded Agate (Agatized Geode Slice)
Silicon Dioxide (SiO₂)
Dendritic Agate
Silicon Dioxide (SiO2) with manganese/iron inclusions
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Red Hematite
Iron(III) Oxide (Fe2O3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)