Quartz (Milky or Common variety)
Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Quartz (Milky or Common variety)
Silicon Dioxide (SiO2)
Blue Lace Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Labradorite
Labradorite (Plagioclase Feldspar Series: (Ca,Na)(Al,Si)4O8)
Granite
Granite (Phaneritic Acidic Igneous Rock)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Basalt
Mafic volcanic rock (Basalt)
Puddingstone (specifically Gowganda Tillite or St. Joseph Island Puddingstone)
Jasper Conglomerate
Baroque Pearl
Biogenic Calcium Carbonate (Aragonite/Conchiolin)
Turquoise and Red Coral (with Grizzly Bear Claw)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)
Larimar
Pectolite (NaCa2Si3O8(OH))
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
Agate (Slab)
Agate (Cryptocrystalline variety of Quartz, SiO2)
Agate
Chalcedony (cryptocrystalline variety of Quartz, SiO2)
Chalcedony
Chalcedony (a microcrystalline variety of Quartz, SiO2)
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Amethyst
Quartz variety; SiO2 (Silicon Dioxide)
Dzi Bead (Agate)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Blue Dyed Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Green Banded Agate
Agate (Variety of Chalcedony/Quartz), SiO2
Agate
Agate (a cryptocrystalline variety of Quartz, SiO₂)
Banded Agate (Lace Agate)
Agate (Variety of Cryptocrystalline Quartz), SiO2
Blue Lace Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Amazonite
K(AlSi3O8) - Microcline (Var. Amazonite)
Shungite
Shungite (carbon-rich Precambrian mineraloid)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Fossilized Oyster Shell
Gryphaea or Crassostrea fossil (Calcium Carbonate, CaCO3)
Jasper Conglomerate (specifically Puddingstone)
Jasper Conglomerate (Siliceous sedimentary rock)
Greenschist
Greenschist (Chlorite-actinolite schist)
Pyrite
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Blue Aventurine
Quartzite with Dumortierite inclusions (SiO2)
Red Jasper
Silicon Dioxide (SiO2) - variety Jasper
Banded Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Chert / Flint
Microcrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)
Rose Quartz
SiO2 (Silicon Dioxide with trace amounts of iron, manganese, or titanium)
Schist
Schist (various mineral compositions)