Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
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Garnet
Garnet Group (e.g., Almandine Fe3Al2(SiO4)3)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Greenstone / Greenschist
Greenschist facies metamorphic rock
metamorphic
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Diabase (also known as Dolerite)
Diabase
igneous
Carnelian (Red Chalcedony)
SiO2 (Silicon Dioxide) with Iron Oxide impurities
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Agate (Beads)
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
Sedimentary (formed from silica deposits)
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Carnelian
Carnelian (Silica, SiO2)
mineral
Quartz (pebble)
Quartz (SiO₂)
Mineral
Ruby
Corundum (Al2O3:Cr)
mineral
Botryoidal Chalcedony
Chalcedony (SiO2)
Mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Tumbled Agate
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist
metamorphic
Yellow Quartz or Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Amphibolite / Hornblende Schist
Amphibolite
metamorphic
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Crystalline Quartz (Rough)
Quartz (Silicon Dioxide, SiO2)
mineral
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Mineral
Greenstone / Greenschist
Greenschist (contains chlorite, epidote, actinolite)
metamorphic
Quartzite (Water-worn Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Clear Quartz Point
Silicon Dioxide (SiO2)
mineral
Black Onyx
Silicon dioxide / Chalcedony (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide with trace amounts of titanium, iron, or manganese)
mineral
Smoky Quartz (Faceted Beads)
Silicon Dioxide (SiO2)
mineral