Gold (in Opaque Matrix/Jewelry)
Native Gold (Au)
Category
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Gold (in Opaque Matrix/Jewelry)
Native Gold (Au)
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Serpentinite (Commonly known as Serpentine)
Antigorite, Lizardite, or Chrysotile [(Mg,Fe)3Si2O5(OH)4]
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
Chalcedony (Agate Nodules)
Silicon Dioxide (SiO2)
Chert (Nodule / Geode fragment)
Microcrystalline Quartz (SiO2)
Chert Conglomerate (or Breccia)
Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)
Banded Agate (River Stone)
Agate (Silicon Dioxide - SiO2)
Diamond (Cluster Ring)
Carbon (C)
Sandstone (Pebble)
Arenite (primarily SiO2)
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
Purple Agate (Dyed Chalcedony)
SiO2 (Silicon Dioxide) with organic dyes
Goldstone and Aura Quartz
Cuprous Glass (Goldstone) and Titanium-coated SiO2 (Aura Quartz)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeO oxides)
Natural Pearl (appearing in a jewelry setting)
Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
River Cobble (likely Sandstone or Siltstone type)
Sandstone or Siltstone (common rock types that form river cobbles)
Gold Nugget
Native Gold (Au)
Garnet (Almandine or Spessartine likely)
Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Sandstone (with vugs or solution cavities)
Arenite (primarily Quartz and Feldspar with CaCO3 or SiO2 cement)
Gold Nugget
Native Gold (Au)
Chalcedony (Agate/Carnelian type)
Silicon Dioxide (SiO2)
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
Beach Pebble (likely Quartz or Chalcedony)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Jade (likely Nephrite Jade based on appearance)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Iron Meteorite
Iron-Nickel Meteorite (primarily composed of kamacite and taenite alloys)
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Stream-rounded)
Arenite (SiO2 based)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Banded Chert or Agate
Silicon Dioxide (SiO2)
Granite (Leucogranite)
Felsic Plutonic Rock (Granite)
Basalt with Mineral Vein (Cobble)
Basalt (with likely Quartz/Calcite vein)
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Smoky Quartz with Siderite and Pyrite
Silicon Dioxide (SiO2) with Ferrous Carbonate (FeCO3) and Iron Sulfide (FeS2)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)