Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
Category
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
Quartzite
Silicon Dioxide (SiO2)
Cubic Zirconia (in Jewelry)
Zirconium Dioxide (ZrO2)
Amethyst on Agate
Crystalline Quartz (SiO2) with trace Iron (Fe3+)
Tumbled blue-gray stone, likely sodalite or dumortierite quartz
Most plausibly sodalite (Na₈Al₆Si₆O₂₄Cl₂); identification is uncertain from the image
Tourmalinated Quartz
Silicon Dioxide (Quartz) with Tourmaline inclusions (SiO2 + Na(Fe,Mg,Al,Li)3Al6(BO3)3Si6O18(OH)4)
Milky Quartz
Silicon Dioxide (SiO2)
Milk Quartz (Sea Glass appearance)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Lapidary Wax (imitation/wax model)
Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)
Cubic Zirconia (Faceted)
Zirconium Dioxide (ZrO2)
Rhodonite in Matrix
Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Green Calcite
Calcium Carbonate (CaCO3)
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Dendritic Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Orange Calcite
Calcium Carbonate (CaCO3)
Grape Agate (Amethystine Chalcedony)
Silicon Dioxide (SiO2) with impurities
White Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Milky Quartz with Hematite/Limonite staining
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartz Vein Outcrop
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Labradorite in Matrix
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
Rough Green Calcite
Calcite (Calcium Carbonate, CaCO3)
White Topaz
Topaz - Al2SiO4(F,OH)2
Hematite
Iron(III) oxide (Fe2O3)
Blue Calcite
Calcite (CaCO3)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Quartz (River Cobble)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Moissanite
Silicon Carbide (SiC)
Tree Agate
Silicon Dioxide (SiO2) with dendritic inclusions