Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
Ruby
Corundum (Al2O3 with Chromium traces)
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Moonstone
Adularia / Orthoclase (KAlSi3O8)
Moonstone (Green Moonstone / Garnierite)
Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
Quartz River Cobble
Silicon Dioxide (SiO2)
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
Smoky Quartz
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine Quartzite)
Silicon Dioxide (SiO2)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Mixed Mineral Specimens
Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)
[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2
Citrine
Silicon Dioxide (SiO2)
Moonstone
Orthoclase (Potassium aluminum silicate - KAlSi3O8)
Quartz Crystal (specifically Rock Crystal)
Silicon Dioxide (SiO2)
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Blue Sapphire
Corundum (Al2O3)
Magnetite
Magnetite (Fe3O4)
Smoky Quartz
Silicon Dioxide (SiO2)
Unakite
Unakite Epidosite (Granite with epidote and orthoclase)
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Aventurine (Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
Smoky Quartz (Tumbled)
Smoky Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)