Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Yellow Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Clear Quartz (beads in a bracelet)
Quartz (SiO2)
Pink Granite (Crystalline Granite)
Igneous Intrusive Rock (Felsic Plutonic)
Rose Quartz
Silicon Dioxide with trace elements (SiO2 + Ti, Fe, or Mn)
Granite
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)
Chert / Flint
Silicon Dioxide (SiO2)
Chert (Nodular)
Chert (SiO2 - Microcrystalline Quartz)
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
Amazonite
Microcline (KAlSi3O8) with Trace Elements
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
Chrysocolla in Quartz (Gem Silica)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)
Stromatolite
Stromatolite (Cyanobacteria-formed Organo-sedimentary structure)
Green Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Milky Quartz (Ferruginous variety)
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
Carnelian
Carnelian (SiO2 - Silicon Dioxide)
Black Onyx
Silicon Dioxide (SiO2)
Basalt with Epidote Veins
Mafic Igneous Rock (Basalt)
Amazonite
Amazonstone (KAlSi3O8)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Tumbled Stones (various)
Mixed Silica-based Minerals (primarily Quartz and Chalcedony)
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
Agate
Agate (Silicon Dioxide - SiO2)
Chert (vuggy variety)
Microcrystalline silica (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
Yellow Diamond (Faceted)
Diamond (C - Pure Carbon)
Amazonite
Potassium Feldspar (KAlSi3O8)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Smoky Quartz
Silicon Dioxide (SiO2)
Fluorite and Red Jasper
Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)
Red Sandstone
Sandstone (principally Quartz with Iron Oxide coating)