Rock Identifier

Category

Man Made Material (Jewelry, Metal Alloy)

Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.

Learn about Man Made Material (Jewelry, Metal Alloy) in the encyclopedia

Opalite

Platinum

Gold

Copper

Silver

Goldstone

Blue Goldstone

Dunite

Zincite

Mint Obsidian

Crimson Obsidian

Lherzolite

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Chert (Jasper/Common Opal mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Common Opal mix)

Microcrystalline Quartz (SiO2)

Gastropod Fossil (Snail) (Gastropoda (Internal mold/Steinkern)) — sedimentary

Gastropod Fossil (Snail)

Gastropoda (Internal mold/Steinkern)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Carnelian (Polished Cabochon) (Silicon Dioxide (SiO2) with iron oxide impurities) — gemstone

Carnelian (Polished Cabochon)

Silicon Dioxide (SiO2) with iron oxide impurities

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Banded Chert (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert

Silicon Dioxide (SiO2)

Green Spot Jasper (Kiwi Jasper / Sesame Jasper) (Partially altered granitic rock rich in quartz, microcline feldspar, and tourmaline or amphibole inclusions) — metamorphic

Green Spot Jasper (Kiwi Jasper / Sesame Jasper)

Partially altered granitic rock rich in quartz, microcline feldspar, and tourmaline or amphibole inclusions

Fossilized Shark Tooth (Fragment) (Elasmobranchii gen. et sp. indet.) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet.

Moss Agate / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Moss Agate / Chalcedony

Silicon Dioxide (SiO2)

Chert (specifically Jasper/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper/Flint)

Microcrystalline Quartz (SiO2)

Elephant Skin Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Elephant Skin Jasper

Microcrystalline Quartz (SiO2)

White quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

White quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Petrified Wood (Silicified Wood (primarily SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Ammonite Fossil (Small Pyritized or Calcitized Internal Mold) (Ammonoidea) — sedimentary

Ammonite Fossil (Small Pyritized or Calcitized Internal Mold)

Ammonoidea

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

Chert (varieties include Flint and Jasper) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Shark Tooth Fossil (Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)) — fossil

Shark Tooth Fossil

Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)

Quartz (Quartz (SiO2, Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2, Silicon Dioxide)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Polished tiger’s-eye (Chatoyant quartz, mainly fibrous crocidolite pseudomorphed by quartz (SiO₂)) — mineral

Polished tiger’s-eye

Chatoyant quartz, mainly fibrous crocidolite pseudomorphed by quartz (SiO₂)

Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Chrysocolla on Matrix (Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla on Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Fossilized Shark Tooth (Chondrichthyes (Class) fossilized tooth) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class) fossilized tooth

Petrified Wood (Silicified Wood (primarily Quartz/Chalcedony replacing $SiO_2$)) — sedimentary

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony replacing $SiO_2$)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O

Likely polished garnet fragment (Garnet group, possibly almandine (Fe₃Al₂Si₃O₁₂)) — gemstone

Likely polished garnet fragment

Garnet group, possibly almandine (Fe₃Al₂Si₃O₁₂)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Fossil Shark Tooth (Carcharadon sp. (likely Carcharodon carcharias or similar Lamniformes)) — fossil

Fossil Shark Tooth

Carcharadon sp. (likely Carcharodon carcharias or similar Lamniformes)

Green Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Green Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Flint (Chert (SiO2)) — sedimentary

Flint

Chert (SiO2)

Chiastolite (Andalusite (Al2SiO5) with carbonaceous inclusions) — metamorphic

Chiastolite

Andalusite (Al2SiO5) with carbonaceous inclusions

Petrified Wood (Agatized/Silicified Wood) (Silicified Wood (SiO2)) — metamorphic

Petrified Wood (Agatized/Silicified Wood)

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Tumbled smoky quartz (Quartz, silicon dioxide (SiO₂), smoky variety) — mineral

Tumbled smoky quartz

Quartz, silicon dioxide (SiO₂), smoky variety