Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Mineral
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz / Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Common Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartzite)
Silicon Dioxide (SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Mixed Mineral Specimens
Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz (Milky/Crystalline)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Crystal (specifically Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
mineral
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Peacock Ore
Bornite (Cu5FeS4)
mineral
Aquamarine and clear quartz
Aquamarine (Be3Al2Si6O18), Quartz (SiO2)
Mineral
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
sedimentary
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Chert (Iron-Stained)
Silicon Dioxide (SiO2)
sedimentary
Gold
Gold (Native Element); Au
mineral
Basalt with Vesicular Texture
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous