Gold and Silver (Metal Components of an Antique Pocket Watch)
Native Gold (Au) and Native Silver (Ag)
mineral
Category
This Appears To Be A Man Made Metallic Object, Likely Jewelry, Not A Natural Rock, Mineral, Or Geological Specimen.
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.
Nephrite Jade
Nephrite
Mineral/Rock
Fluorite (Purple variety)
Calcium Fluoride (CaF2)
mineral
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
Mineral/Igneous/Metamorphic association
Granite Pebble
Phaneritic Felsic Igneous Rock
igneous
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Granite
Phaneritic Igneous Rock (Granite)
igneous
Quartz (Grain)
Silicon Dioxide (SiO2)
mineral
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Obsidian
Obsidian (volcanic glass), predominantly amorphous SiO₂
Igneous
Sunstone
(Ca,Na)((Al,Si)2Si2O8) - Plagioclase Feldspar
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Lapis Lazuli
Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
metamorphic
Amazonite
Triklinic Potassium Feldspar (KAlSi3O8)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sedimentary Rock
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Citrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Granite (tumbled pebble)
Granite (Plutonic Igneous Rock)
Igneous Rock
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
igneous
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Corundum (Ruby/Sapphire crystal)
Al2O3 (Aluminum Oxide)
mineral
Smoky Quartz (with possible Garnet inclusions)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood / Chalcedony (SiO2)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Granite or Pegmatite in host rock
Granitoid / Felsic Intrusive Rock
Igneous
Quartz
Silicon Dioxide (SiO₂)
Mineral
Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Mineral
Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
metamorphic
Banded Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)
sedimentary
Smoky Quartz and Feldspar Pegmatite
Granitic Pegmatite (chiefly SiO2 and KAlSi3O8)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (SiO2 with Iron impurities)
mineral
Blue Dyed Agate Geode Slice
Chalcedony (Silicon Dioxide, SiO2) with artificial cobalt/iron-based dye
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Blue Dyed Agate
Silicon Dioxide (SiO2)
mineral
Agate (Plume or Moss Agate variant)
Chalcedony (SiO2) with various inclusions
mineral
Granite
Granite (a felsic intrusive igneous rock)
Igneous Rock
Agate (specifically Carnelian Agate or Lake Superior style Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral