Amethyst
Quartz (Silicon Dioxide, SiO2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Amethyst
Quartz (Silicon Dioxide, SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Quartz (Yellow / Citrine Pebble)
Silicon Dioxide (SiO2)
Amazonite
Microcline Feldspar (KAlSi3O8)
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)
Aquamarine
Be3Al2(Si6O18)
Ametrine
Quartz (Silicon Dioxide, SiO2)
Quartz (Agate/Jasper pebble)
Silicon dioxide (SiO2)
Amethyst
Quartz (Silicon Dioxide, SiO2)
Tumbled Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
Aquamarine
Beryl (Be3Al2(SiO3)6)
Amethyst
Quartz (SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Brown Chalcedony
Silicon Dioxide (SiO2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)3O8
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst Quartz Crystal
Silicon Dioxide (SiO2) with iron impurities
Agate (specifically crazy lace agate / orbicular agate node)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Nugget of Native Silver
Native Silver (Ag)
Quartz with Tourmaline inclusion (Tourmalinated Quartz)
Silicon Dioxide (SiO2) with Tourmaline inclusions
Agate (Sliced and Carved)
Silicon Dioxide (SiO2) - Banded Chalcedony
Agate Nodules
Cryptocrystalline Quartz (SiO2)
Rough Amethyst
Silicon Dioxide (SiO2) with iron impurities
Tektite
Tektite (meteoritic glass)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Quartz (Citrine/Milky variety)
Silicon Dioxide (SiO2)
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8) with inclusions
Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
Sunstone (Feldspar)
(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Amazonite
Microcline (K(AlSi3O8))
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
Emerald in Matrix
Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)
Lake Superior Agate
Silicon Dioxide (Cryptocrystalline Quartz), SiO2
Banded Agate with Drusy Quartz
Cryptocrystalline Quartz (SiO2) with macrocrystalline Quartz
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities