Basalt with Epidote (Greenstone)
Epidote-bearing Metabasalt
metamorphic
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
igneous
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper Variant likely)
Silicon Dioxide (SiO2)
Sedimentary Rock or Mineral (depending on origin and purity)
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Mineral (Variety of Quartz/Chalcedony)
Turquoise (Blue Howlite imitation)
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Banded Agate
Agate (Cryptocrystalline variety of Silica, SiO2)
mineral
Blue Lace Agate (with Amethyst Geode center)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral (man-enhanced)
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Lapis Lazuli
Lapis lazuli (a rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
sedimentary
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Polychrome Jasper (Desert Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Amethyst
Amethyst (Silica mineral, SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Chert (Flint)
Chert (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of organic matter)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Green Jasper
Silicon Dioxide (SiO2)
sedimentary
Chert (with Limestone/Dolomite host)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Spiny Oyster Shell
Spondylus (Calcium Carbonate, CaCO3)
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2) with Iron Oxide inclusions
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral