Red jasper (likely brecciated jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides
Category
Browse mineral, variety of quartz specimens identified by the Rock Identifier community.
Red jasper (likely brecciated jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Yellow Jasper
Silicon dioxide (SiO2)
Quartz (Milky or Smoky)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO₂)
Mixed rock and mineral collection
Multiple specimens; visible examples may include quartz (SiO₂), amethyst (quartz), calcite (CaCO₃), and dark mafic rocks
Amazonite
Microcline (KAlSi3O8) with Pb trace impurities
Fuchsite in Quartz (or Emerald in Fuchsite / Verdite)
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz Matrix
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Fuchsite
Chromium-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]
Polychrome Jasper
Silicon Dioxide (SiO2) with impurities
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Tumbled Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Red Jasper (Skull Carving)
Jasper, a cryptocrystalline variety of Quartz (SiO2)
Chalcedony
Chalcedony (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (Chalcedony variety)
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
Rose Quartz (SiO2 with traces of Ti, Fe, or Mn)
Quartz
SiO₂ (Silicon Dioxide)
Jasper
Jasper (Silicon Dioxide, SiO2)
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Blue Quartz (Dumortierite Quartz / Celestite)
Silicon Dioxide (SiO2) with inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions