Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral; variety of quartz specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Tumbled carnelian agate
Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)
Tumbled chalcedony or quartz-rich chert
Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide staining
Raw rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Rough smoky quartz
Quartz, silicon dioxide (SiO₂), likely iron- or radiation-colored smoky variety
Iron-stained quartz, possibly smoky quartz
Quartz (SiO₂), with reddish-brown iron-oxide staining; exact variety is uncertain from the photo
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Tumbled jasper (likely picture jasper or iron-rich jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides
Milky Quartz
Silicon Dioxide (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Onyx
Chalcedony (SiO2) with parallel banding
Blue Chalcedony
Silicon Dioxide (SiO2)
Bloodstone
Heliotrope
Milky Quartz
Silicon Dioxide (SiO2)
Small quartz-rich pebble, possibly milky quartz
Quartz (silicon dioxide, SiO₂)
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
Orange carnelian (possibly dyed agate) pendant
Cryptocrystalline quartz (chalcedony), SiO₂
Tumbled orange carnelian (likely)
Chalcedony, microcrystalline quartz (SiO₂)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Blue Tiger's Eye
Riebeckite (crocidolite variety)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Banded Calcite
CaCO3
Polished banded jasper (likely red jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides; exact variety uncertain
Quartz (Orangey-Yellow variety)
Silicon Dioxide (SiO2)
Iron-stained milky quartz pebble
Quartz (SiO₂), with iron-oxide/hydroxide staining; exact identification is uncertain from the image
Tumbled smoky quartz
Quartz (SiO₂), brown smoky variety
Clear Quartz
Silicon dioxide (SiO2)
Likely polished/tumbled quartz-rich specimen
Quartz, silicon dioxide (SiO₂), possibly an agate or chalcedony variety
Tumbled jasper or iron-rich chert
Microcrystalline quartz (SiO₂), likely colored by iron oxides