Rock Identifier

Category

Sedimentary (Alluvial Deposit)

Browse sedimentary (alluvial deposit) specimens identified by the Rock Identifier community.

Quartz (Translucent/Rose variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Translucent/Rose variety)

Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

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

Diamond (in jewelry mount)

Carbon (C)

Yellow Diamond (Faceted) (Diamond (C - Pure Carbon)) — mineral

Yellow Diamond (Faceted)

Diamond (C - Pure Carbon)

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

Diamond (in jewelry)

Diamond (Carbon, C)

Chert (and Chalcedony/Agate mixture) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and Chalcedony/Agate mixture)

Microcrystalline Quartz (SiO2)

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

Diamond (in a jewelry setting)

Carbon (C)

Rough Ruby (Corundum (Al2O3) with Chromium traces) — mineral

Rough Ruby

Corundum (Al2O3) with Chromium traces

Garnet (Almandine variety) (Almandine, Fe3Al2(SiO4)3) — Mineral

Garnet (Almandine variety)

Almandine, Fe3Al2(SiO4)3

Kyawthuite (Kyawthuite (Bi3+Sb5+O4)) — mineral

Kyawthuite

Kyawthuite (Bi3+Sb5+O4)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Ruby (Pinkish-Red) (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby (Pinkish-Red)

Corundum (Al2O3 with Chromium trace)

River Cobble (Quartzite-rich Sandstone) (Clastic Sedimentary Rock (Litharenite/Quartzite transition)) — sedimentary

River Cobble (Quartzite-rich Sandstone)

Clastic Sedimentary Rock (Litharenite/Quartzite transition)

Ferruginous Conglomerate (Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))) — sedimentary

Ferruginous Conglomerate

Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

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

Yellow Diamond

Diamond (Carbon, C)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

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

Rough Diamond

Diamond (Native Element Carbon, C)

Gemstone Sand (Mineral Assortment) (Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)) — mineral

Gemstone Sand (Mineral Assortment)

Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)

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

Diamond

Diamond (pure Carbon, C)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Corundum (Sapphire variant) (Aluminium oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Burmese Jadeite (Water Jade) (Jadeite (NaAlSi2O6)) — metamorphic

Burmese Jadeite (Water Jade)

Jadeite (NaAlSi2O6)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Limonite)) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions (Hematite/Limonite)

Banded Jasper (Silicon Dioxide (SiO2)) — Mineral/Sedimentary Rock (as a cryptocrystalline variety of quartz)

Banded Jasper

Silicon Dioxide (SiO2)

Mineral/Sedimentary Rock (as a cryptocrystalline variety of quartz)

Ferruginous Quartz (River Pebble) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary (secondary classification for a weathered mineral specimen)

Ferruginous Quartz (River Pebble)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

sedimentary (secondary classification for a weathered mineral specimen)

Quartz River Pebbles (Silicon Dioxide (SiO2)) — sedimentary

Quartz River Pebbles

Silicon Dioxide (SiO2)

Gold Placer (Gold Flakes and Nuggets) (Native Gold (Au)) — mineral

Gold Placer (Gold Flakes and Nuggets)

Native Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold Flake / Placer Gold (Native Gold (Au)) — mineral

Gold Flake / Placer Gold

Native Gold (Au)

Aquamarine (Beryl (Be3Al2Si6O18 with Fe2+ impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with Fe2+ impurities)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Conglomerate (Conglomerate (a clastic sedimentary rock)) — Sedimentary

Conglomerate

Conglomerate (a clastic sedimentary rock)

Diamond (Cut jewelry specimen) (Diamond (pure Carbon, C)) — mineral

Diamond (Cut jewelry specimen)

Diamond (pure Carbon, C)

Gold-Bearing River Sand (Auriferous Placer Sand (Au + various minerals like SiO2 and Fe3O4)) — sedimentary

Gold-Bearing River Sand

Auriferous Placer Sand (Au + various minerals like SiO2 and Fe3O4)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Ruby (Corundum) (Aluminium oxide (Al2O3) with Chromium traces) — mineral

Ruby (Corundum)

Aluminium oxide (Al2O3) with Chromium traces

Gold (Placer Gold Nuggets) (Native Gold (Au)) — mineral

Gold (Placer Gold Nuggets)

Native Gold (Au)