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Recent Rock Identifications
Explore rocks, minerals, and gemstones recently identified by our AI-powered system
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
mineral
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
mineral
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
mineral
Slate with Pyrite Inclusions
Foliated Metamorphic Rock (with Iron Sulfide FE-S2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Chert (and/or Flint)
Silicon dioxide (SiO2)
sedimentary
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
mineral
Fossil Shell in Sedimentary Matrix
Bivalvia (fossil) in Calcium Carbonate Matrix
sedimentary
Fossilized Brachiopod Shell in Matrix
Phylum Brachiopoda (typically Calcium Carbonate or Chitinophosphatic)
sedimentary
Amethyst (Tumbled)
Silicon Dioxide (SiO2 with iron impurities)
mineral
Ruby in Matrix
Corundum (Al2O3)
mineral
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
mineral
Limonite Concretion
Goethite-rich Concretion (FeO(OH))
sedimentary
Herkimer Diamond
Quartz (Silicon Dioxide) - SiO2
mineral
Amber with inclusion
Amber (Fossilized Tree Resin)
mineral
Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Vesicular Basalt
Basalt with secondary mineral infilling (Amygdaloidal Basalt)
igneous
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Lake Superior Agate
Cryptocrystalline Quartz (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Unakite
Unakite (altered granitic rock)
metamorphic
Banded Agate
Silicon Dioxide (SiO2)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica
mineral
Blue Quartz (Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically crocidolite or dumortierite)
mineral
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