mineral

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Hardness: 5-5.5 on Mohs scale; Color: Milky white with iridescent blue and orange/gold flashes (Tyndall effect); Luster: Vitreous; Structure: Amorphous; Cleavage: Conchoidal fracture.

Hardness: 5-5
Luster: Vitreous

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 5-5.5 on Mohs scale; Color: Milky white with iridescent blue and orange/gold flashes (Tyndall effect); Luster: Vitreous; Structure: Amorphous; Cleavage: Conchoidal fracture.

Formation & geological history

Opalite is a synthetic, man-made material created through the process of melting silica together with various metal ores (often copper and magnesium) to produce an iridescent, translucent glass. It does not occur naturally in the earth and has no geological age.

Uses & applications

Predominantly used for ornamental carvings, jewelry (beads, cabochons), and metaphysical/spiritual practices. It is a popular decorative material due to its glow and affordability.

Geological facts

Opalite is frequently mistaken for natural Moonstone or Opal. While 'natural opalite' is a term sometimes used for common opal (non-precious opal), the milky, glowing material shown in figurines like this is always man-made glass.

Field identification & locations

Identify in the field by checking for air bubbles (visible under magnification) and its distinct 'glow' that turns orange when light passes through it and blue when light reflects off it. It is found in gift shops and crystal stores worldwide.

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