gemstone

Pink Opal

Hydrated amorphous silica (SiO2·nH2O)

Hardness: 5.5-6.5 on the Mohs scale, Color: Milky white with vibrant pink bands or patches, Luster: Vitreous to waxy, Crystal Structure: Amorphous (no true crystalline structure), Cleavage: None, Specific Gravity: 1.9-2.2

Hardness: 5

Identified August 2, 2026More gemstone →

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Physical properties

Formation & geological history

Formed at low temperatures from silica-rich water solutions that deposit in the cavities and cracks of volcanic and sedimentary rocks, often occurring in arid environments.

Uses & applications

Used primarily in lapidary arts, high-end jewelry, carvings, and as a popular collectible specimen.

Geological facts

Pink opal is often referred to as the 'stone of resolve' in crystal healing communities and is notably found in significant quantities in the Andes mountains of Peru.

Field identification & locations

Easily identified by its distinctive waxy luster and characteristic pink-and-white banding or coloration. Common locations include Peru, Mexico, and the USA.