Conglomerate
Conglomerate
sedimentary
Category
Sedimentary (Alluvial Deposit)
Browse sedimentary (alluvial deposit) specimens identified by the Rock Identifier community.
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Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
River Pebble (Greywacke or Chert mix)
Silicon Dioxide (SiO2) with varying mineral impurities
sedimentary
Chert (and Chalcedony/Agate mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond (in a jewelry setting)
Carbon (C)
mineral
Gravel and Pebbles
Unconsolidated rock fragments / detrital sediment
sedimentary
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Burmese Jadeite (Water Jade)
Jadeite (NaAlSi2O6)
metamorphic
Agate Pebble (Desert Agate / Chalcedony Nodule)
Silicon Dioxide (SiO2)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Garnet (Almandine variety)
Almandine, Fe3Al2(SiO4)3
Mineral
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Pink sandstone
Quartz-rich siliciclastic sandstone, likely arkose or subarkose
sedimentary
River Cobble (Quartzite-rich Sandstone)
Clastic Sedimentary Rock (Litharenite/Quartzite transition)
sedimentary
Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
gemstone
Gold and Diamond Jewelry
Native Gold (Au) and Diamond (C)
gemstone
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Sapphire (Rough)
Corundum (Al2O3)
mineral
Sapphire
Corundum (Al2O3)
gemstone
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Gold
Native Gold (Au)
mineral
Ruby (Corundum)
Aluminium oxide (Al2O3) with Chromium traces
mineral
Sapphire (Rough Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral
Gold (Placer Gold Nuggets)
Native Gold (Au)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Ferruginous Conglomerate
Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))
sedimentary
Rough Sapphire (Corundum)
Corundum (Al2O3)
mineral
Quartz Pebble in Arkosic Sand
Silicon Dioxide (SiO2)
mineral
Ruby / Red Tourmaline
Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
mineral
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Gold Placer (Gold Flakes and Nuggets)
Native Gold (Au)
mineral
Garnet
Garnet group species (likely Almandine, Fe3Al2(SiO4)3)
mineral
Sapphire
Corundum (Al2O3)
mineral
Gold Nugget
Native Gold (Au)
mineral
Gold Nugget
Native Gold (Au)
mineral
Gold Flake / Placer Gold
Native Gold (Au)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
mineral
Gold Nugget
Native Gold (Au)
mineral
White Quartz (Tumbled/Waterworn)
Silicon Dioxide (SiO2)
mineral