Fossil shell fragment
Indeterminate molluscan bioclast, likely aragonite or calcite
fossil
Category
Metamorphic Rock (For Both Nephrite And Jadeite)
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
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Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
mineral
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Mineral
Actinolite
Ca2(Mg,Fe)5Si8O22(OH)2
mineral
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Quartz (Druzy or Geode fragment)
Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Granodiorite (or Granite) Pebble
Phaneritic Felsic Igneous Pebble
igneous
Siltstone (Yellow/Brown Sandstone or Siltstone)
Siltstone / Fine-grained Sandstone (rich in iron oxides like limonite)
sedimentary
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble (on Granite)
Silicon Dioxide (SiO2)
mineral
Fossil bivalve shell fragment
Likely a ribbed oyster or scallop-type bivalve; exact genus requires locality and preservation details
fossil
Herkimer Diamond
Double-Terminated Quartz (SiO2)
mineral
Red and Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasp-Agate
Cryptocrystalline Quartz (SiO2) with Iron Oxide inclusions
sedimentary
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
Mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz-rich metamorphic pebble, possibly jade-like greenstone
Likely quartzite or altered basalt/greenstone; visible minerals may include quartz, feldspar, chlorite/epidote, and iron oxides
metamorphic
Schorl (Black Tourmaline) in Quartz Matrix
Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)
mineral
Tumbled serpentine
Serpentinite; chiefly antigorite, lizardite, and chrysotile, with possible magnetite and accessory minerals
metamorphic
Scoria
Scoriaceous Basalt
igneous
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
mineral
Clear Quartz (Double Terminated)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Quartz (Iron-stained or Rose variant)
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Jasper-Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (specifically Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Quartz (Clear or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral