Red Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Carnelian Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Variety: Chalcedony
mineral
Green Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Fire Agate (Rough)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Banded Agate (specifically Lake Superior Agate style)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Agate Geode / Thunderegg
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Mineral
Onyx (Black Onyx)
Silicon Dioxide (SiO2) - Chalcedony variety
Mineral
Black Onyx
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Blue Agate (likely Dyed)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Rose Quartz
Quartz (SiO₂), specifically a variety of Quartz
Mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Dyed Pink Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Mineral
Banded Agate (Dyed Purple)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Blue Lace Agate (often dyed)
Silicon dioxide (SiO2) - variety of chalcedony
mineral
Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Sandstone (lithic/greywacke variety)
Arenite (composed primarily of SiO2 with various lithic fragments)
sedimentary
Jasper (Milky/Cream Variety)
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary (chemical/biological)
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jadeite
Jadeite (NaAlSi2O6)
metamorphic
Black Onyx (Tumbled)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Blue Lace Agate (Banded Chalcedony)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Banded Gneiss (Variety of Gneiss)
Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)
Metamorphic Rock
Larimar
Pectolite (Blue variety), NaCa2Si3O10(OH)
mineral