Opalite

Physical Properties

Hardness: 5.5-6.5 (Mohs scale), Color: Milky blue or translucent white with orange/pink glow when held against light, Luster: Vitreous, Structure: Amorphous (glass), Cleavage: Conchoidal fracture.

Formation & Geological History

Opalite is a man-made variety of glass. While natural opal is formed through the slow evaporation of mineral-rich water in sedimentary layers, this specimen is created by humans using silicon dioxide and various metallic impurities to mimic the opalescent shimmer.

Uses & Applications

Primarily used in jewelry for beads, pendants, and rings. It is also popular in holistic practices and as a decorative or collecting item due to its aesthetic appeal.

Geological Facts

Unlike natural opal which contains water and can crack over time, Opalite is durable glass. It is often mislabeled as 'Sea Opal,' 'Tiffany Stone,' or 'Ice Opal' to make it sound like a rare natural gemstone.

Field Identification & Locations

Identify by looking for the 'Tyndall effect'—it appears blue against a dark background but glows orange-yellow when light passes through it. It also feels warmer and lighter than many natural stones and usually contains tiny air bubbles from the manufacturing process.

Identified on: 4/17/2026

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