Rock Identifier

Category

Artifact

Browse artifact specimens identified by the Rock Identifier community.

Blue glass-like tumbled specimen (Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image) — mineral

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

White Jade Carving (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — gemstone

White Jade Carving

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Fulgurite (Lechatelierite) — mineral

Fulgurite

Lechatelierite

Jadeite Jade (NaAl(Si2O6)) — gemstone

Jadeite Jade

NaAl(Si2O6)

Green jade-like cabochon pendant (Unidentified green gem; possibly jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)) — gemstone

Green jade-like cabochon pendant

Unidentified green gem; possibly jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)

Clay (Hydrous aluminum phyllosilicate) — sedimentary

Clay

Hydrous aluminum phyllosilicate

Chalcedony / milky quartz flake (Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment) — mineral

Chalcedony / milky quartz flake

Microcrystalline quartz (SiO₂), likely chalcedony; possibly a worked quartzite or chert fragment

Chert or flint fragment (Microcrystalline quartz (SiO₂), likely chert) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), likely chert

Banded chert or silicified sedimentary stone (Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities) — sedimentary

Banded chert or silicified sedimentary stone

Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities

Chert flake or weathered flint (Microcrystalline quartz (SiO₂), commonly termed chert or flint) — sedimentary

Chert flake or weathered flint

Microcrystalline quartz (SiO₂), commonly termed chert or flint

Flint (SiO2) — sedimentary

Flint

SiO2

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Flint (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Flint

SiO2 (Cryptocrystalline Quartz)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Flint (Cryptocrystalline Quartz (SiO2)) — sedimentary

Flint

Cryptocrystalline Quartz (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Flint (Silicon Dioxide (SiO2)) — sedimentary

Flint

Silicon Dioxide (SiO2)

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

Flint / Chert Nodule (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert Nodule

Microcrystalline quartz (SiO2)

Dzi Bead (Agate) (Silicon dioxide (Chalcedony)) — gemstone

Dzi Bead (Agate)

Silicon dioxide (Chalcedony)

Jadeite (NaAl(Si2O6)) — gemstone

Jadeite

NaAl(Si2O6)

Obsidian Projectile Point (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian Projectile Point

Volcanic Glass (Amorphous SiO2)

Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — gemstone

Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Chert (Arrowhead/Projectile Point) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Arrowhead/Projectile Point)

Microcrystalline quartz (SiO2)

Chert Arrowhead (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Cryptocrystalline Quartz (SiO2)

Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Flint

Microcrystalline Quartz (SiO2)

Flint (Microcrystalline quartz (SiO2)) — sedimentary

Flint

Microcrystalline quartz (SiO2)

Flint (or Chert) (Silicon dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Flint (or Chert)

Silicon dioxide (Microcrystalline Quartz, $SiO_2$)

Blue Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Blue Chert

Microcrystalline Quartz (SiO2)

Chert / Flint (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline quartz (SiO2)

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

Jadeite Bangle (NaAl(Si2O6)) — gemstone

Jadeite Bangle

NaAl(Si2O6)

Chondrite Meteorite (Ordinary Chondrite (Undifferentiated Meteorite)) — meteorite

Chondrite Meteorite

Ordinary Chondrite (Undifferentiated Meteorite)

Jadeite Carving (Pixiu) (Jadeite (NaAlSi2O6)) — gemstone

Jadeite Carving (Pixiu)

Jadeite (NaAlSi2O6)

Jadeite Jade (NaAlSi2O6 (Sodium Aluminum Silicate)) — gemstone

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Jadeite Jade (Jadeite (NaAlSi2O6)) — metamorphic

Jadeite Jade

Jadeite (NaAlSi2O6)

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Libyan Desert Glass (Natural Silica Glass (SiO2 with minor iron and titanium)) — mineraloid

Libyan Desert Glass

Natural Silica Glass (SiO2 with minor iron and titanium)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Yellow Agate (Chalcedony (SiO2)) — gemstone

Yellow Agate

Chalcedony (SiO2)