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

Rough Diamond (Diamond (Carbon, C)) — mineral

Rough Diamond

Diamond (Carbon, C)

Diamond (Baguette cut) (Carbon (C)) — gemstone

Diamond (Baguette cut)

Carbon (C)

Polished multicolored jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert) — mineral

Polished multicolored jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert

Blue Sapphire and Diamond (Set in Metal) (Corundum (Al2O3) and Diamond (C)) — mineral

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Fluorite (likely Green Fluorite variant) (Calcium Fluoride (CaF2)) — mineral

Fluorite (likely Green Fluorite variant)

Calcium Fluoride (CaF2)

Limestone (Calcium carbonate rock (CaCO3)) — sedimentary

Limestone

Calcium carbonate rock (CaCO3)

Quartzite (Metamorphic rock composed primarily of quartz (SiO2)) — metamorphic

Quartzite

Metamorphic rock composed primarily of quartz (SiO2)

Garnet-Mica Schist (Schist (variety with Almandine Garnet, Fe3Al2(SiO4)3)) — metamorphic

Garnet-Mica Schist

Schist (variety with Almandine Garnet, Fe3Al2(SiO4)3)

Diamond (in Ring Setting) (Diamond (C)) — gemstone

Diamond (in Ring Setting)

Diamond (C)

Basalt (Vesicular Basalt (Mafic volcanic rock)) — Igneous

Basalt

Vesicular Basalt (Mafic volcanic rock)

Limonite and Goethite (Ironstone) (Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)) — sedimentary

Limonite and Goethite (Ironstone)

Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)

Iron-stained quartz-rich rock, possibly goethite-bearing quartz (Quartz (SiO₂) with iron oxides/hydroxides, likely goethite or limonite) — mineral

Iron-stained quartz-rich rock, possibly goethite-bearing quartz

Quartz (SiO₂) with iron oxides/hydroxides, likely goethite or limonite

Rose Quartz (Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron

Milk Quartz (Vein Quartz) (Quartz (Silicon Dioxide, SiO2)) — mineral

Milk Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Faceted Peach Morganite (Beryl) (Morganite (Be3Al2Si6O18 with trace Manganese)) — mineral

Faceted Peach Morganite (Beryl)

Morganite (Be3Al2Si6O18 with trace Manganese)

Silver (Native Element) (Ag (Argentum)) — mineral

Silver (Native Element)

Ag (Argentum)

Diamond ring (Diamond (crystalline carbon, C)) — gemstone

Diamond ring

Diamond (crystalline carbon, C)

Peridot (Olivine (Mg, Fe)2SiO4) — gemstone

Peridot

Olivine (Mg, Fe)2SiO4

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Granite (Felsic Plutonic Rock) — igneous

Granite

Felsic Plutonic Rock

Granite (Felsic Intrusive Igneous Rock) — igneous

Granite

Felsic Intrusive Igneous Rock

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Granite Pebble (Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)) — igneous

Granite Pebble

Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)

Olivine in Basalt matrix (Peridotite (Mg, Fe)2SiO4) — igneous

Olivine in Basalt matrix

Peridotite (Mg, Fe)2SiO4

Brown Sandstone Pebble (Clastic Sandstone (SiO2 with iron oxides)) — sedimentary

Brown Sandstone Pebble

Clastic Sandstone (SiO2 with iron oxides)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Milky Quartz Pebble (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Granite (Felsic Plutonic Rock (Granite)) — igneous

Granite

Felsic Plutonic Rock (Granite)

Quartz (in matrix) (Quartz (SiO₂)) — mineral

Quartz (in matrix)

Quartz (SiO₂)

Jasper, Agate, Quartz Mix (Polished Beads) (SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.) — Mineral/Semiprecious Gemstone (variety of Quartz)

Jasper, Agate, Quartz Mix (Polished Beads)

SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.

Mineral/Semiprecious Gemstone (variety of Quartz)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Blue chalcedony cabochon (probable) (Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)) — gemstone

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Citrine (Quartz (SiO2) - specifically, a variety of macrocrystalline quartz) — mineral

Citrine

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Dendritic Agate (Montana Moss Agate) (Silicon Dioxide (SiO2) - Chalcedony with Manganese/Iron inclusions) — mineral

Dendritic Agate (Montana Moss Agate)

Silicon Dioxide (SiO2) - Chalcedony with Manganese/Iron inclusions

Diamond (in Ring Setting) (Diamond (Pure Carbon, C)) — gemstone

Diamond (in Ring Setting)

Diamond (Pure Carbon, C)

Silver (Sterling Silver Jewelry) (Argentum (Ag) mixed with Copper (Cu)) — mineral

Silver (Sterling Silver Jewelry)

Argentum (Ag) mixed with Copper (Cu)

Chert (Quartz Variety) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Quartz Variety)

Chert (Silicon Dioxide, SiO2)

Jade (likely nephrite) (Nephrite jade: interlocking actinolite–tremolite amphibole, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂; exact identification requires testing) — metamorphic

Jade (likely nephrite)

Nephrite jade: interlocking actinolite–tremolite amphibole, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂; exact identification requires testing

Unakite (Unakite (epidote-bearing altered granite; mainly pink potassium feldspar, green epidote, and quartz)) — metamorphic

Unakite

Unakite (epidote-bearing altered granite; mainly pink potassium feldspar, green epidote, and quartz)

Quartzite (Metamorphic Quartzite) — metamorphic

Quartzite

Metamorphic Quartzite