Rock Identifier

Category

Man Made Material (Jewelry, Metal Alloy)

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

Quartz vein in Host Rock (Crystalline Silicon Dioxide (SiO2) in Lithic Matrix) — metamorphic

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

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

Diamond (in jewelry)

Carbon (C)

Silver (Native Element / Alloy) (Silver (Ag)) — mineral

Silver (Native Element / Alloy)

Silver (Ag)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Blue Slag Glass (Amorphous Silica (Byproduct of smelting)) — Antropogenic (Man-made)

Blue Slag Glass

Amorphous Silica (Byproduct of smelting)

Antropogenic (Man-made)

Quartzite (Yellow/Tan) (Metamorphic Rock composed of Quartz (SiO₂)) — metamorphic

Quartzite (Yellow/Tan)

Metamorphic Rock composed of Quartz (SiO₂)

Sandstone (Pebble) (Sandstone (arenite, arkose, wacke depending on composition)) — sedimentary

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)

Sandstone (Arenite (variable SiO2 composition)) — sedimentary

Sandstone

Arenite (variable SiO2 composition)

Green Slag Glass (Cullet (Amorphous Silicon Dioxide with impurities)) — Man-made rock-like material

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Man-made rock-like material

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Diorite (Gneissic) (Diorite) — igneous

Diorite (Gneissic)

Diorite

Diamond (in a jewelry setting) (Diamond (Carbon, C)) — mineral

Diamond (in a jewelry setting)

Diamond (Carbon, C)

Chert (and associated river cobbles) (Silicon dioxide (SiO2)) — sedimentary

Chert (and associated river cobbles)

Silicon dioxide (SiO2)

Chipped Glass/Plastic Fragment (Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic) — Man-made material (simulant/artifact)

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Man-made material (simulant/artifact)

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

Chert (specifically Zebra Chert/Flint)

Silicon Dioxide (SiO2)

Bismuth (Bismuth (Bi)) — Mineral

Bismuth

Bismuth (Bi)

Tiffany Stone (Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony) — mineral

Tiffany Stone

Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony

Chert (Grey-Green Flint) (Microcrystalline silicon dioxide (SiO2)) — sedimentary

Chert (Grey-Green Flint)

Microcrystalline silicon dioxide (SiO2)

Fossilized Coral (Coquina/Limestone) (Cnidaria Anthozoa (Fossilized)) — sedimentary

Fossilized Coral (Coquina/Limestone)

Cnidaria Anthozoa (Fossilized)

Sandstone (likely Quartzose Sandstone) (Arenite) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite

Coral Rock (Coquina) (Biogenic Limestone (Calcium Carbonate - CaCO3)) — sedimentary

Coral Rock (Coquina)

Biogenic Limestone (Calcium Carbonate - CaCO3)

Beryl (Emerald Variety) (Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces) — mineral

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces

Aquamarine (Beryl (Be3Al2Si6O18 with iron traces)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron traces)

Beryl (Aquamarine) (Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)) — mineral

Beryl (Aquamarine)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chert (varieties include Flint and Mudstone) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (varieties include Flint and Mudstone)

Microcrystalline Silica (SiO2)

Blue Goldstone (Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)) — man-made glass

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Laterite (Laterite (Iron and aluminum-rich residual rock)) — sedimentary

Laterite

Laterite (Iron and aluminum-rich residual rock)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Beryl (likely Emerald or Aquamarine in matrix) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Beryl (likely Emerald or Aquamarine in matrix)

Beryllium aluminum silicate (Be3Al2Si6O18)

Beryl (likely Aquamarine or Green Beryl) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Beryl (likely Aquamarine or Green Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Ferruginous Breccia (Breccia with Iron-rich (Hematite/Goethite) Matrix) — sedimentary

Ferruginous Breccia

Breccia with Iron-rich (Hematite/Goethite) Matrix

Diamond in Kimberlite (Diamond (C in Kimberlite)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Chert (Nodule) (Chert (SiO2)) — sedimentary

Chert (Nodule)

Chert (SiO2)

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

Chert (and Flint)

Silicon Dioxide (SiO2)

Silver (Jewelry Specimen) (Native Silver (Chemical Formula: Ag)) — mineral

Silver (Jewelry Specimen)

Native Silver (Chemical Formula: Ag)

Silver (Native Element) (Ag (Native Silver), with minor Copper (Cu)) — mineral

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

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)