Orca Agate
Chalcedony (Microcrystalline Quartz, SiO2)
sedimentary
Category
Sedimentary (Artificial)
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Silicon dioxide (SiO2) - Pseudomorph after crocidolite
mineral
Belemnite Fossil
Belemnitida (Order within Cephalopoda)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Quartz Crystal Point
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Specular Hematite (on Schist/Matrix)
Hematite (Alpha-Fe2O3)
mineral
Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
mineral
Amber Calcite
Calcium Carbonate (CaCO3)
mineral
Feldspar (specifically Orthoclase or Plagioclase)
Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate
mineral
Amber (and Cubic Zirconia)
Fossilized Tree Resin
mineraloid
Chert (Jasper)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Black Onyx
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Chert (Flint)
Chert (SiO2)
sedimentary
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Chalcedony (Agate/Carnelian variety)
Cryptocrystalline Quartz (SiO2)
mineral
Blue Celestite
Celestine (Strontium Sulfate, SrSO4)
mineral
Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
mineral
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Chalcedony (specifically Common Opal or Agate variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Nutstone)
Ironstone (with High Limonite/Hematite Content)
sedimentary
Kyanite (Blue Kyanite)
Kyanite (Al2SiO5)
mineral
Halite (Rock Salt)
Halite (NaCl)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Carnelian (Carnelian Agate)
Silicon dioxide (SiO2) - a variety of Chalcedony
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Gold
Native Gold (Au)
mineral
Aragonite (Sputnik habit)
Aragonite (Calcium Carbonate, CaCO3)
mineral