Aquamarine
Beryl (Be3Al2Si6O18)
Category
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
Aquamarine
Beryl (Be3Al2Si6O18)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Quartz Pebble (with probable Iron staining)
Silicon Dioxide (SiO2)
Citrine (likely Heat-Treated)
Quartz (Silicon Dioxide, SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Blue Sapphire
Corundum (Al2O3)
Basalt River Stone
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt
Basalt (Mafic volcanic rock)
Prasiolite (Green Quartz)
Silicon Dioxide (SiO2) with iron impurities
Native Gold (in the form of jewelry)
Gold (Au)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Schist/Phyllite
Metamorphic Schist (Chlorite Schist variety)
Rhodonite
Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Smoky Quartz
Silicon Dioxide (SiO2)
Muscovite Mica in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
Green Tourmaline
Elbaite - Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
Smoky Quartz
Silicon Dioxide (SiO₂)
Quartz (River Pebble)
Quartz (Silicon Dioxide - SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Agate (Banded Chalcedony)
Agate (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Grainy Variety)
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2) with iron impurities
Ruby (Corundum)
Al2O3 (Aluminium oxide with Chromium impurities)
Muscovite (Mica) in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Synthetic Sapphire and Ion-X Glass
Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass
Basalt
Mafic volcanic rock (Silicon dioxide 45-52%)
Orthoclase Feldspar (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
Gastropod Steinkern (Fossilized Snail Cast)
Phylum Mollusca, Class Gastropoda (Commonly CaCO3 or SiO2 after replacement)
Scoria (Basaltic)
Vesicular Basalt
Tektite (Indochinite)
Tektite (High-silica impact glass)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite)