Blue Chalcedony and Picture Jasper Beads
Blue Chalcedony (SiO2), Picture Jasper (SiO2)
Category
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
Blue Chalcedony and Picture Jasper Beads
Blue Chalcedony (SiO2), Picture Jasper (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)
Quartzite
Quartzite (primarily SiO2)
Green Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Agate
Silicon Dioxide (SiO2) - Chalcedony variant
Agate
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Greenstone
Metabasalt / Chlorite-Epidote Schist
Anthracite Coal
Anthracite (Carbon-based organic sedimentary/metamorphic rock)
Shungite
Non-crystalline carbon (high-carbon metamorphic rock)
Coal (Anthracite)
Anthracite (Carbon-based organic sedimentary/metamorphic rock)
Slate
Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)
Greenschist (Chlorite Schist)
Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)
Schist (Biotite/Mica Schist)
Medium-grade regional metamorphic rock (rich in Phyllosilicates)
Lapis Lazuli
Lapis lazuli (a metamorphic rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Quartz (River Siltstone Quartzite Pebble)
Silicon Dioxide (SiO2)
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
Quartzite
Metamorphic Quartz (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)
Schist
Mica Schist
Agate (Moss or Dendritic Agate)
Chalcedony (Silicon Dioxide, SiO2)
Gneiss (specifically Banded Gneiss)
Gneiss
Greenstone with Quartz Veining
Epidiorite or Metabasalt with SiO2 (Quartz) veins
Quartzite
Quartzite (SiO2)
Lapis Lazuli
Complex mixture containing Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite
Quartzite
Quartzite (primarily SiO2)
Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (composed primarily of SiO2)