Amethyst (Quartz variety)
Amethyst - SiO2 (Silicon Dioxide with Iron impurities)
Category
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Amethyst (Quartz variety)
Amethyst - SiO2 (Silicon Dioxide with Iron impurities)
Jasper
Silicon dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Epidote or Chlorite inclusions
Silicon Dioxide (SiO2) with inclusions of Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Pyrite
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Nuummite
Nuummite (ortho-amphibole rock)
Clear Quartz
Silicon Dioxide (SiO2)
Ametrine
SiO2 (silicon dioxide)
Quartz
Quartz (SiO₂)
Sandstone (likely Quartzite-grade)
Arenite (primarily SiO2)
Amethyst (Rose-tinted variation)
Silicon Dioxide (SiO2) with trace iron impurities
Quartz
Silicon Dioxide (SiO2)
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
Blue Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Milky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)
Tiger's Eye (dark/grey variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Honey Calcite (Orange Onyx)
Calcium Carbonate (CaCO3)
Smoky Quartz with Calcite/Quartz Veining
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Gravel / Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz
Quartz (SiO₂)
Quartz (likely tumbled or naturally water-worn)
Quartz (SiO₂ - Silicon Dioxide)
Quartz (Milky Quartz)
Silicon Dioxide (SiO₂)
Yellow Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Orca Agate (Chalcedony)
Silicon Dioxide (SiO2) with inclusions
Banded Chert (Jasper)
Silicon Dioxide (SiO2)