Amethyst (Geode)
Silicon Dioxide (SiO2) with iron impurities
mineral
Category
Mineral (Gemstone Variety Of Beryl)
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Prase quartz with actinolite inclusions
Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Agate / Banded Chalcedony
Agate (Silicon Dioxide / SiO2)
mineral
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium traces)
mineral
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions of Chlorite, Manganese, or Iron
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcedony (Agate Nodules)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Sphere
Quartz (Silicon Dioxide, SiO2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Smoky Quartz Geode Cluster
Silicon Dioxide (SiO2)
mineral
Amethyst Quartz (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine Quartz (likely heat-treated)
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Rhodonite in Quartz Matrix
Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn,Fe,Mg,Ca)SiO3
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Botryoidal Hematite (Kidney Ore)
Iron(III) oxide (Fe2O3)
Mineral
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with microcrystalline structure
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
mineral
Montana Moss Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Moonstone (Feldspar)
Orthoclase/Albite ((K,Na)AlSi3O8)
mineral
Pink Fluorite
Fluorite (Calcium Fluoride) - CaF2
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese
mineral
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Quartz (Milky/Crystal Variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Yellow/Milky variety)
Silicon Dioxide (SiO2)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide - SiO2)
Mineral
Calcite Geode
Calcium Carbonate (CaCO3)
mineral