Fossilized Shark Tooth (Fragment)
Elasmobranchii fossil (likely Cretalamna or Squalicorax genus)
sedimentary
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.
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Shaly Matrix
Iron Sulfide (FeS2)
mineral
Moqui Marble (Sandstone Concretion)
Hematite-cemented Sandstone (Fe2O3 + SiO2)
sedimentary
Diamond
Diamond (pure Carbon, C)
mineral
Amazonite
Tectosilicate Microcline (KAlSi3O8)
mineral
Beryllonite
Beryllonite (NaBePO4)
mineral
Banded Iron Formation (BIF) / Iron Ore
Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)
sedimentary
Hematite (Iron Ore)
Hematite (alpha-Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Diamond
C (Native Carbon)
mineral
Iron Meteorite
Siderite (Iron-Nickel Alloy), predominantly Kamacite and Taenite (Fe, Ni)
mineral
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Jasper Beads (Polished)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Silicon dioxide (SiO2)
Mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Botryoidal Hematite (Kidney Ore)
Iron(III) oxide (Fe2O3)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Fe2O3)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Variety: Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony (Agate/Jasper mix)
Silicon Dioxide (SiO2)
mineral
Orange Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral