Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
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.
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Mineral
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Quartz with Dumortierite/Magnesio-riebeckite inclusions
Quartz (SiO2) containing Dumortierite (Al7(BO3)(SiO4)3O3)
igneous/metamorphic
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities
sedimentary
Ferruginous Quartz
Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)
mineral
Chert (Brecciated or Veined)
Silicon Dioxide (SiO2)
sedimentary
Massive Quartz
Silicon dioxide (SiO2)
mineral
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Sedimentary
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
sedimentary
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
metamorphic (man-made)
Chert (often called Jasper in this color variety)
Microcrystalline Quartz (SiO2)
sedimentary
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
US Penny
Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy
Man-made object (metal alloy)
Green Aventurine (Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Agatized Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Titanium Coated Aura Quartz (Apple Aura Quartz)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating
Mineral (Man-modified)
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Mineral
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Mineral
Wonderstone (Banded Rhyolite)
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
igneous
New Jade (Serpentine)
Antigorite / Serpentine Group (Mg3Si2O5(OH)4)
metamorphic
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Blue Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Chert (Common Opal variant)
Silicon Dioxide (SiO2)
sedimentary
Chert (Brown Variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Chert (microcrystalline quartz)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Chert (Brown variety / Common Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Anthropogenic Material (Man-made Rock)
Chert (Green variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary