Quartz
Quartz (SiO₂)
Mineral
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Jasper with Quartz vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (milky quartz variety)
Quartz (SiO₂)
Mineral
Amethyst
Silicon dioxide (SiO2)
mineral
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Grey Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Sedimentary
Milky Quartz
Silicon dioxide (SiO2)
mineral
Ferruginous Quartzite (Red Quartzite)
Quartzite (primarily SiO2 with Fe2O3 inclusions)
metamorphic
Quartzite (Iron-stained)
Quartzite (SiO2)
metamorphic
Chert (often called Jasper or River Siltstone)
Chert (SiO2)
sedimentary
Jasper (Sedimentary variety)
Silicon Dioxide (SiO2) with impurities
sedimentary
Red Quartzite (likely Purple/Red variety)
Quartzite (SiO2)
metamorphic
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2) Geode
sedimentary
Picture Jasper
SiO2
Mineral/Sedimentary
Jasper with Epidote Vein
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Red Jasper (possibly Agatized Jasper)
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
sedimentary
Chalcedony Geode Fragment
Microcrystalline Quartz (SiO2)
mineral
Jasper and Quartz conglomerate (River Rock)
Silicon Dioxide (SiO2) - Chalcedony and Quartz variety
sedimentary
Chalcedony or Chert/Jasper with secondary mineral staining
SiO2 (for chalcedony/quartz) with possible secondary copper minerals (e.g., CuSiO3·nH2O for chrysocolla, Cu2(CO3)(OH)2 for malachite) or iron oxides/hydroxides.
Mineral, potentially a rock with chalcedony/jasper.
Fluorite with Rhodochrosite
Fluorite (CaF2) and Rhodochrosite (MnCO3)
Mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Lapis Lazuli (Tumbled)
Lazurite-dominated contact metamorphic rock
metamorphic
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
sedimentary
Quartz (Milky and Smoky variety)
Silicon Dioxide (SiO2)
mineral
Beach Pebble (Chert/Quartzite)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (Desert Rose or Botryoidal Chalcedony)
Silicon Dioxide (SiO2)
mineral
Apache Tear
Obsidian (Hydrated Silica Rich Volcanic Glass)
igneous
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Shale or Slate with Quartz Veins
Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins
Metamorphic, likely Sedimentary with Quartz veins