Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Mineral (Specifically A Gemstone Variety)
Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.
Jasper (specifically variegated or swamp jasper beads)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Amazonite
K(AlSi3O8)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Chert (Chert Nodule in Limestone)
Microcrystalline Quartz (SiO2)
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Agate
Silicon Dioxide (SiO2)
mineral
Chrome Diopside
Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Unakite
Unakite (Epidotized Granite)
metamorphic
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Iridescent Ammonite
Ammonoidea (Species: likely Cleoniceras or Desmoceras); Mineral: Aragonite/Ammolite (CaCO3)
sedimentary (fossilized)
Jasper with Epidote Vein
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Mineral
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Cloudy Quartz
Silicon Dioxide (SiO2)
mineral
Rough Emerald
Emerald (Beryl), Be3Al2(SiO3)6
mineral
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Blue Quartz (specifically Dumortierite Quartz)
Silicon Dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)
metamorphic
Red Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Blue Goldstone
Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)
Synthetic (Man-made Glass)
Red Quartzite
Quartzite (primarily SiO2)
metamorphic
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Carnelian and White Quartz Bracelet
Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz
mineral
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Chrysoprase
Silicon dioxide with nickel impurities (SiO2 + Ni)
mineral
Lapis Lazuli
Lazurite-rich metamorphic rock (complex silicate)
metamorphic
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite/Limonite)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
mineral
Banded Agate (specifically Eye Agate / Chalcedony)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Chrysoprase
Chalcedony (cryptocrystalline silica containing nickel); Chemical Formula: SiO2 with Ni impurities
mineral
Chert (Jasper)
Chert / Microcrystalline Quartz (SiO2)
sedimentary
Pegmatitic Granite
Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)
igneous
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral