Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Category
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sapphire (Raw/Rough)
Corundum (Al2O3)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
Smoky Quartz
Silicon Dioxide (SiO₂)
Smoky Quartz
Silicon Dioxide (SiO2)
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
Citrine
Quartz (Silicon Dioxide - SiO2)
Quartz (River Cobble)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO₂)
Moonstone (specifically White Moonstone/Adularia)
Potassium aluminum silicate ((K,Na)AlSi3O8)
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
Amazonite
K(AlSi3O8) - Microcline variant
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
Smoky Quartz
Silicon Dioxide (SiO2)
Amazonite
Potassium aluminum silicate (KAlSi3O8)
Green Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Pyrite
Iron Disulfide (FeS2)
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
Labradorite (Feldspar)
Labradorite: (Ca,Na)(Al,Si)4O8
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)
[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Smoky Quartz (Tumbled)
Smoky Quartz (Silicon Dioxide - SiO2)
Ruby (Pink to Red Corundum)
Al2O3 (Corundum with Chromium impurities)
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Smoky Quartz
Silicon Dioxide (SiO2)