Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Imitation)
Browse sedimentary (imitation) specimens identified by the Rock Identifier community.
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
sedimentary
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chalcedony (Carnelian/Agate variety)
Silicon Dioxide (SiO2) with trace hematite/iron impurities
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide - SiO2)
mineral
Cinnabar in Matrix
Cinnabar (Mercury(II) sulfide, HgS)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Aragonite Star Cluster
Aragonite (Sputnik habit) - CaesarCO3
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Banded Calcite (often sold as Caribbean Calcite or Pink Calcite)
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Sedimentary
Barite
Barium Sulfate (BaSO4)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Celestine (or Celestite) on Matrix
Celestine (SrSO4)
mineral
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Mineral
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
mineral
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint/Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral