Rock Identifier

Category

Man Made Object (Metal Alloy)

Browse man made object (metal alloy) specimens identified by the Rock Identifier community.

Learn about Man Made Object (Metal Alloy) in the encyclopedia

Opalite

Copper

Goldstone

Blue Goldstone

Zincite

Lherzolite

Bixbyite

Gondite

Strawberry Obsidian

Dunite

Yellow jasper (likely ocean jasper or brecciated jasper) (Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins) — mineral

Yellow jasper (likely ocean jasper or brecciated jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins

Red Moss Agate (Jasper) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Moss Agate (Jasper)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Tumbled Gray Agate (Silicon Dioxide (SiO2)) — mineral

Tumbled Gray Agate

Silicon Dioxide (SiO2)

Pearl (with Peridot) (Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4) — mineral

Pearl (with Peridot)

Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4

Fossil Coral (Rugose Coral or Tabulate Coral (Phylum Cnidaria)) — fossil

Fossil Coral

Rugose Coral or Tabulate Coral (Phylum Cnidaria)

Slag Glass (Silicon dioxide with impurities) — mineral

Slag Glass

Silicon dioxide with impurities

Pink granite (Granite, chiefly quartz + feldspar + mica (commonly biotite); exact variety may be pink alkali-feldspar granite) — igneous

Pink granite

Granite, chiefly quartz + feldspar + mica (commonly biotite); exact variety may be pink alkali-feldspar granite

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Orange Calcite (Calcite (CaCO3)) — Mineral

Orange Calcite

Calcite (CaCO3)

Diamond (Faceted) (Carbon (C)) — gemstone

Diamond (Faceted)

Carbon (C)

Tumbled moss agate (Chalcedony (microcrystalline quartz, SiO₂) with moss-like inclusions) — mineral

Tumbled moss agate

Chalcedony (microcrystalline quartz, SiO₂) with moss-like inclusions

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Raw Diamond (Carbon (C)) — gemstone

Raw Diamond

Carbon (C)

Diamond (in jewelry setting) (Adamantine Carbon (C)) — mineral

Diamond (in jewelry setting)

Adamantine Carbon (C)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Chert (and/or Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Chocolate or Brown Flint) (Chert (SiO2)) — sedimentary

Chert (Chocolate or Brown Flint)

Chert (SiO2)

Gastly (Trick or Trade Halloween Series) (Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)) — Mineral (Synthetic - Paper and Ink Polymorph)

Gastly (Trick or Trade Halloween Series)

Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)

Mineral (Synthetic - Paper and Ink Polymorph)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gabbro (Gabbro) — igneous

Gabbro

Gabbro

Blue sodalite beads (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Blue sodalite beads

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Polished/tumbled jasper, likely ocean jasper or brecciated jasper (Jasper: microcrystalline quartz (SiO₂) with iron oxides and other silicate impurities) — mineral

Polished/tumbled jasper, likely ocean jasper or brecciated jasper

Jasper: microcrystalline quartz (SiO₂) with iron oxides and other silicate impurities

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Chert (Flint/Chalcedony)

Silicon Dioxide (SiO2)

Sandstone (Red/Brown Variety) (Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)) — sedimentary

Sandstone (Red/Brown Variety)

Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Tumbled blue-gray chalcedony (likely blue agate) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Tumbled blue-gray chalcedony (likely blue agate)

Chalcedony, microcrystalline quartz (SiO₂)

Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

Amber (Succinates (Organic Fossilized Resin)) — mineraloid

Amber

Succinates (Organic Fossilized Resin)

Polished leopard-skin jasper (Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and other mineral impurities) — sedimentary

Polished leopard-skin jasper

Jasper, a microcrystalline quartz variety (SiO₂), with iron-oxide and other mineral impurities

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Satin Spar (Selenite variant) (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar (Selenite variant)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Slate (Metamorphic pelitic rock) — metamorphic

Slate

Metamorphic pelitic rock

Dalmatian jasper (Orbicular rhyolite, commonly sold as Dalmatian jasper; mainly quartz, feldspar, and altered mafic minerals) — igneous

Dalmatian jasper

Orbicular rhyolite, commonly sold as Dalmatian jasper; mainly quartz, feldspar, and altered mafic minerals

Black Onyx or Dyed Agate Node (Cryptocrystalline Quartz (SiO2)) — mineral

Black Onyx or Dyed Agate Node

Cryptocrystalline Quartz (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Polished dark-green stone, possibly serpentine or nephrite jade (Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (actinolite–tremolite amphibole)) — metamorphic

Polished dark-green stone, possibly serpentine or nephrite jade

Serpentine-group minerals, commonly antigorite/lizardite; possible nephrite (actinolite–tremolite amphibole)

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

Chert / Flint

Microcrystalline Quartz (SiO2)