Clear Quartz (Faceted)
SiO2 - Silicon Dioxide
gemstone
Category
Igneous, Metamorphic, And Sedimentary (Mixed Assemblage)
Browse igneous, metamorphic, and sedimentary (mixed assemblage) specimens identified by the Rock Identifier community.
Learn about Igneous, Metamorphic, And Sedimentary (Mixed Assemblage) in the encyclopedia
View all →
Red jasper (polished/cut rough)
Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides
metamorphic
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Mixed rounded beach gravel
Polymictic alluvial or beach clasts, likely including quartzite, limestone, granite, and other silicate rocks
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
Limonite
FeO(OH)•nH2O
mineral
Limonite
FeO(OH)•nH2O
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Fancy Jasper
Silicon Dioxide (SiO2) with iron and organic inclusions
sedimentary
Banded Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Weathered conglomeratic breccia
Polymictic conglomerate/breccia, likely iron-stained
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Rough Quartz (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Intrusive Igneous Rock (Felsic to Intermediate)
igneous
Likely quartz-rich stone (possibly milky quartz or quartzite)
Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Mixed small pebbles and mineral grains
Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments
sedimentary
Asphalt aggregate pavement
Bituminous asphalt concrete containing crushed stone aggregate
sedimentary
Asphalt Conglomerate
Artificial Bituminous Conglomerate
sedimentary
Granite or granitic gneiss boulders
Quartz–feldspar–mica granitoid; possibly banded gneiss
igneous