Rock Identifier

Category

Artifact

Browse artifact specimens identified by the Rock Identifier community.

Turquoise and Red Coral (CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)) — mineral

Turquoise and Red Coral

CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Corallium rubrum (Red Coral)

Chert (Arrowheads) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Polished black stone, likely black obsidian (Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition) — igneous

Polished black stone, likely black obsidian

Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition

Jade Bangle (Jadeite) (Jadeite, NaAlSi2O6) — gemstone

Jade Bangle (Jadeite)

Jadeite, NaAlSi2O6

Beads (likely glass or man-made material) (N/A (artificial material)) — Man-made material, not a natural rock or mineral specimen

Beads (likely glass or man-made material)

N/A (artificial material)

Man-made material, not a natural rock or mineral specimen

Carnelian or Red Agate (Chalcedony (SiO2)) — mineral

Carnelian or Red Agate

Chalcedony (SiO2)

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)

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

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

Chert / Flint

Microcrystalline quartz (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Jadeite (NaAl(Si2O6)) — gemstone

Jadeite

NaAl(Si2O6)

Green Jadeite (Jadeite, NaAl(Si2O6)) — mineral

Green Jadeite

Jadeite, NaAl(Si2O6)

Iron-stained quartz-rich metamorphic rock (probable quartzite or hydrothermal vein rock) (Quartz-dominant rock; chiefly SiO₂, with iron oxides/hydroxides and minor sulfide minerals) — metamorphic

Iron-stained quartz-rich metamorphic rock (probable quartzite or hydrothermal vein rock)

Quartz-dominant rock; chiefly SiO₂, with iron oxides/hydroxides and minor sulfide minerals

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)

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)

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)

Sandstone Concretion (Sedimentary concretion) — Sedimentary

Sandstone Concretion

Sedimentary concretion

Tumbled carnelian (orange chalcedony) (Carnelian, a microcrystalline variety of quartz (SiO₂)) — mineral

Tumbled carnelian (orange chalcedony)

Carnelian, a microcrystalline variety of 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)

Chalcedony (likely prehistoric flaked point) (Microcrystalline quartz, SiO₂; possibly green chalcedony or silicified volcanic material) — mineral

Chalcedony (likely prehistoric flaked point)

Microcrystalline quartz, SiO₂; possibly green chalcedony or silicified volcanic material

Obsidian (black volcanic glass) (Obsidian; predominantly rhyolitic volcanic glass, mainly SiO₂ with minor feldspar, quartz, and iron oxides) — igneous

Obsidian (black volcanic glass)

Obsidian; predominantly rhyolitic volcanic glass, mainly SiO₂ with minor feldspar, quartz, and iron oxides

Tumbled carnelian (orange-red chalcedony) (Carnelian, a microcrystalline variety of quartz (SiO₂)) — gemstone

Tumbled carnelian (orange-red chalcedony)

Carnelian, a microcrystalline variety of quartz (SiO₂)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone) (Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)) — Sedimentary

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Sandstone Concretion (Sedimentary Concretion (Quartz sandstone with iron oxide cement)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (Quartz sandstone with iron oxide cement)

Rock Crystal Quartz Bead (Silicon Dioxide (SiO2)) — mineral

Rock Crystal Quartz Bead

Silicon Dioxide (SiO2)

Baltic Amber (Raw) (Succinite) — fossil

Baltic Amber (Raw)

Succinite

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

Jade Ring

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