Carnelian
Carnelian (SiO2)
mineral
Category
Organic Gemstone (Not A Mineral)
Browse organic gemstone (not a mineral) specimens identified by the Rock Identifier community.
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode / Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Blue Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Moonstone
Feldspar (Orthoclase with Albite), (K,Na)AlSi3O8
mineral
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral
Diamond
Native Carbon (C)
mineral
Quartz (Smoky or Clear variety with inclusions)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)3(OH))
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8); variety of Orthoclase Feldspar
mineral
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) primarily colored by iron oxide (Hematite)
mineral
Quartz with Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
mineral
Beryl (Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variant)
Silicon Dioxide (SiO2)
mineral
Sodalite
Chloric sodium aluminum silicate (Na8(Al6Si6O24)Cl2)
mineral
Labradorite (Schiller Spar)
(Na,Ca)(Al,Si)4O8
mineral
Star Sapphire
Corundum (Al2O3) with Rutile inclusions
mineral
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
mineral
Rough Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Carnelian
SiO2 (Silicon Dioxide) - Carnelian variety of Chalcedony
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Quartz (Milk/Citrine variety)
Silicon Dioxide (SiO2)
mineral
Lake Superior Agate
Cryptocrystalline Quartz (SiO2)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide
mineral
White Quartz (Carved or Tumbled)
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8) with trace lead (Pb) impurities
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral