Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Moonstone (Orthoclase Feldspar)
(K,Na)AlSi3O8
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Heliotrope (Bloodstone)
Silicon dioxide (SiO2) with inclusions
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Emerald (Beryl)
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Fulgurite
Fulgurite (Lechatelierite-rich variety)
Charoite
K(Ca,Na)2Si4O10(OH,F)·H2O
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
Opal (Precious Opal)
Hydrated Silica (SiO2·nH2O)
Raw Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Druzy Quartz on Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Amazonite
Potassium aluminum silicate (KAlSi3O8)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
Septarian Nodule
Septarian Concretion (Calcium Carbonate/Aragonite/Calcite)
Amethyst (Tumbled)
Purple Quartz (SiO2 with iron impurities and irradiation)
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Amethyst (Geode/Druzy)
Silicon Dioxide (SiO2) with iron impurities
Petrified Wood
Silicon Dioxide (SiO2) - Calcified / Silicified Wood
Rose Quartz
Quartz (Silicon Dioxide) - SiO2
Flower Agate (Cherry Blossom Agate)
Chalcedony (SiO2) with Opaque Inclusions
Red Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Fe2O3 inclusions)
Chalcedony
Chalcedony (SiO2)
White Opal (Common)
Hydrated Silica (SiO2·nH2O)
Golden Healer Quartz
Silicon Dioxide (SiO2) with limonite/hematite inclusions
Amethyst (Cabochon)
Silicon Dioxide (SiO2) with iron impurities
Aquamarine
Beryl (Be3Al2Si6O18)
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
Amazonite
Amazonite (KAlSi3O8)
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Tourmalinated Quartz
Silicon Dioxide (SiO2) with Schorl inclusions (NaFe2+3Al6(BO3)3Si6O18(OH)4)
Rainbow Moonstone with Black Tourmaline
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)