Quartz Pebble
Silicon Dioxide (SiO2)
Category
Browse igneous or sedimentary specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Boulder
Silicon Dioxide (SiO2)
Mica (Muscovite or Biotite)
Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)
Quartz Crystal
Silicon Dioxide (SiO2)
Quartz with Matrix
Silicon Dioxide (SiO2)
Tumbled Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Pyrite
Iron Sulfide (FeS2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or igneous host
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
Dalmatian Stone
Dalmatian Jasper (a trade name for an igneous microcrystalline rock composed mostly of feldspar, quartz, and dravite)
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
Pyrite
Iron sulfide (FeS2)
Fluorescent Calcite
Calcite (CaCO3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Agate
Chalcedony (SiO2) with impurities
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Quartz (Raw Specimen)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Gravel / Small Pebble
Rock Fragment (Gravel)
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
Clear Quartz (Rock Crystal) Bracelet
Silicon Dioxide (SiO2)
Quartz (Pink / Ferruginous)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Yellow Calcite
Calcium Carbonate (CaCO3)
White Quartz
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Fluorite Bracelet
Calcium Fluoride (CaF2)
Quartz
Silicon Dioxide (SiO2)
Blue Quartz
Silicon Dioxide (SiO2) with inclusions