Rock Identifier
Pink Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral
mineral

Pink Opal

Hydrated amorphous silica (SiO2·nH2O)

AI-generated identification · may be incorrect

Hardness of 5.5 to 6.5 on the Mohs scale, pink to pale rose color with occasional translucent crystalline quartz matrix, waxy to vitreous luster, amorphous crystal structure with no cleavage, and a specific gravity around 2.1.

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Physical properties

Hardness of 5.5 to 6.5 on the Mohs scale, pink to pale rose color with occasional translucent crystalline quartz matrix, waxy to vitreous luster, amorphous crystal structure with no cleavage, and a specific gravity around 2.1.

Formation & geological history

Forms at low temperatures from silica-rich water solutions depositing in cavities of volcanic rocks or sedimentary strata, typically occurring in arid environments.

Uses & applications

Used primarily for ornamental carvings, polished cabochons in jewelry, and metaphysical crystal healing collections.

Geological facts

Pink opal is often found naturally associated with clear crystalline quartz and dendritic manganese inclusions, creating striking visual contrasts.

Field identification & locations

Identify by its distinct soft pink coloration, lack of cleavage, and waxy luster; major deposits are found in Peru, Australia, and Mexico.