Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
Category
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
Clear Quartz (Cut/Faceted Gemstone)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine Quartz / Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Smoky Quartz / Calcite)
SiO2 (Silicon Dioxide)
Calcite
Calcium Carbonate (CaCO3)
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)
Galena with Pyrite
Lead Sulfide (PbS) associated with Iron Sulfide (FeS2)
Quartz with Matrix
Silicon Dioxide (SiO2)
Tumbled Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Rose Quartz
Silicon Dioxide (Quartz), SiO2
Common Opal
Hydrated amorphous silica (SiO2·nH2O)
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Magnetite / Hematite (Iron Ore)
Magnetite (Fe3O4) or Hematite (Fe2O3)
Likely pyrite-bearing rock
Pyrite (FeS₂), possibly in a quartz- or sulfide-rich matrix
Pyrite
Iron sulfide (FeS2)
Fluorescent Calcite
Calcite (CaCO3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Raw Specimen)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Gravel / Small Pebble
Rock Fragment (Gravel)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
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)
Mixed Rock Collection (Pebbles and Stones)
Various geological specimens