Rock Identifier

Category

Antropogenic (Man Made Glass Byproduct)

Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.

Learn about Antropogenic (Man Made Glass Byproduct) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Mint Obsidian

Blue Obsidian

Green Obsidian

Crimson Obsidian

Cherry Obsidian

Violet Obsidian

Cobalt Blue Obsidian

Tangerine Obsidian

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Quartz (Milky/River Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/River Quartz)

Silicon Dioxide (SiO2)

Pearl (Calcium Carbonate (CaCO3) with Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony) (Chert (microcrystalline quartz)) — Metamorphic Rock

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)

Chert (microcrystalline quartz)

Metamorphic Rock

Chert (Arrowhead Shard) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Arrowhead Shard)

Microcrystalline silica (SiO2)

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

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Weathered sandstone or granitic rock fragment (Likely quartz-rich sandstone; exact identification requires testing) — sedimentary

Weathered sandstone or granitic rock fragment

Likely quartz-rich sandstone; exact identification requires testing

Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

Pearl (Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)) — mineral

Pearl

Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)

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

Rough Diamond

Diamond (pure Carbon, C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Likely tumbled dark volcanic rock (Probably basalt or basaltic andesite; exact identification is uncertain from the image) — igneous

Likely tumbled dark volcanic rock

Probably basalt or basaltic andesite; exact identification is uncertain from the image

Quartz (likely macrocrystalline variety) (Quartz (SiO₂)) — Mineral

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Diamond

Diamond (Pure Carbon, C)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Quartz (Rock Crystal) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Pale granite pebble (tentative identification) (Granite; a coarse-grained felsic intrusive igneous rock composed primarily of quartz and feldspar, with minor mica or amphibole) — igneous

Pale granite pebble (tentative identification)

Granite; a coarse-grained felsic intrusive igneous rock composed primarily of quartz and feldspar, with minor mica or amphibole

Chrysoprase (Chrysoprase (a variety of Chalcedony, SiO₂)) — Mineral

Chrysoprase

Chrysoprase (a variety of Chalcedony, SiO₂)

Sandstone (Quartz-rich Cobble) (Arenite) — sedimentary

Sandstone (Quartz-rich Cobble)

Arenite

Sandstone (Sandstone (lithified sand)) — sedimentary

Sandstone

Sandstone (lithified sand)

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)

Fossilized Shark Tooth (Fragment) (Elasmobranchii gen. et sp. indet. (Calcium Phosphate / Apatite fossil)) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet. (Calcium Phosphate / Apatite fossil)

Quartz (Quartz (SiO2)) — Mineral

Quartz

Quartz (SiO2)

Crystal Quartz Beads (likely Clear Quartz) (Quartz (SiO₂)) — Mineral

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment) (Quartz (SiO₂)) — Mineral

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)

Quartz (SiO₂)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Quartz (Silicon dioxide (SiO2)) — Mineral

Quartz

Silicon dioxide (SiO2)

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

Rough Diamond

Diamond (pure Carbon, C)

Emerald (Rough) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Emerald (Rough)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Tree Agate (Chalcedony (SiO2)) — gemstone

Tree Agate

Chalcedony (SiO2)

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

Diamond (in jewelry setting)

Carbon (C)

Pearl (Aragonite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite (CaCO3) with Conchiolin

Pink Marble (Recrystallized Limestone (Calcium Carbonate, CaCO3)) — metamorphic

Pink Marble

Recrystallized Limestone (Calcium Carbonate, CaCO3)

Sapphire (likely blue synthetic sapphire or blue glass in a ring) (Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.) — Mineral

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Chalk (Micrite (primarily Calcium Carbonate, CaCO3)) — sedimentary

Chalk

Micrite (primarily Calcium Carbonate, CaCO3)

Weathered vuggy quartz-rich rock (probable silicified limestone or quartz breccia) (Microcrystalline quartz (SiO₂) with calcite (CaCO₃), iron oxides, and minor clay minerals) — sedimentary

Weathered vuggy quartz-rich rock (probable silicified limestone or quartz breccia)

Microcrystalline quartz (SiO₂) with calcite (CaCO₃), iron oxides, and minor clay minerals

Quartz (likely tumbled or naturally water-worn) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone (with iron staining) (Quartz Arenite / Ferruginous Sandstone) — sedimentary

Sandstone (with iron staining)

Quartz Arenite / Ferruginous Sandstone