Quartz (Variety: Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)
Browse organic gemstone (not a rock or mineral in the traditional sense, but bio mineralized material) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pallasite Meteorite
Pallasite (ST-class)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Zoisite with Ruby
Anyolite (Ca2Al3(SiO4)3(OH) with Al2O3:Cr)
metamorphic
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
mineral
Moonstone
Orthoclase feldspar ((K,Na)AlSi3O8)
mineral
Yellow Quartz
SiO2 (Silicon Dioxide)
mineral
Moonstone
Feldspar (Orthoclase with Albite), (K,Na)AlSi3O8
mineral
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Fluorite, Sodalite, and Rose Quartz collection
Calcium Fluoride (CaF2), Sodium Aluminum Silicate with Chlorine (Na8(Al6Si6O24)Cl2), Silicon Dioxide (SiO2)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Calcite/Aragonite)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Amazonite
Potassium aluminum silicate (KAlSi3O8)
mineral