mineral

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Hardness: 5-5.5 on Mohs scale; Color: Translucent to milky with a blue/yellow glow and iridescent sheen; Luster: Vitreous/Glassy; Structure: Amorphous (non-crystalline); Cleavage: Conchoidal fracture; Specific gravity: 2.4-2.5.

Hardness: 5-5
Luster: Vitreous/Glassy

Identified May 30, 2026More mineral →

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Physical properties

Formation & geological history

Opalite is a man-made variety of glass. It is created by fusing various materials, often including dolomite and metal oxides, to create an opalescent effect similar to volcanic glass or natural opal. It does not have a geological age as it is manufactured.

Uses & applications

Primarily used in decorative jewelry, lapidary carvings, meditation tools, and as a 'healing stone' in metaphysical practices due to its aesthetic appeal.

Geological facts

While often confused with natural Opal or Moonstone, Opalite is almost always man-made. If it is natural (very rare), it is called 'common opal' and lacks the play-of-color seen in precious opal.

Field identification & locations

Identify by looking for small air bubbles (typical of glass), a consistent milky-blue hue that turns amber when looking through it at a light source, and a smooth, glass-like fracture pattern. It feels warmer to the touch than natural stone.

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