mineral
Pink Opal
Hydrated amorphous silica (SiO2·nH2O)
AI-generated identification · may be incorrectMohs hardness of 5.5 to 6.5, pink to white coloration with a waxy to vitreous luster, and an amorphous crystal structure.
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Physical properties
Mohs hardness of 5.5 to 6.5, pink to white coloration with a waxy to vitreous luster, and an amorphous crystal structure.
Formation & geological history
Formed at low temperatures from silica-rich water solutions deposited in cavities of volcanic and sedimentary rocks.
Uses & applications
Widely used in ornamental carvings, gemstone jewelry, and metaphysical crystal collections.
Geological facts
Unlike precious opal, pink opal typically lacks play-of-color and gets its pastel hue from microscopic inclusions of minor minerals or organic compounds.
Field identification & locations
Easily identified by its opaque pink tone and lack of cleavage; major deposits are found in Peru, Australia, and the USA.
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