mineral

Mystic Topaz

Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)

Hardness: 8.0 on Mohs scale; Color: Rainbow iridescent; Luster: Vitreous; Crystal Structure: Orthorhombic; Cleavage: Perfect basal; Specific Gravity: 3.4-3.6

Hardness: 8
Color: Rainbow iridescent
Luster: Vitreous

Identified May 25, 2026More mineral →

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Physical properties

Hardness: 8.0 on Mohs scale; Color: Rainbow iridescent; Luster: Vitreous; Crystal Structure: Orthorhombic; Cleavage: Perfect basal; Specific Gravity: 3.4-3.6

Formation & geological history

Formed in igneous rocks like granite and pegmatite. The base is natural colorless topaz, but the 'Mystic' effect is created by a modern laboratory process involving a thin film deposition of titanium or gold.

Uses & applications

Primarily used in jewelry such as rings, earrings, and pendants due to its unique color play and hardness.

Geological facts

Mystic Topaz is not a naturally occurring color; it was first seen at the Hong Kong Jewelry Fair in 1998. It uses a patented process called thin-film deposition to create its signature rainbow sheen.

Field identification & locations

Identify by its rainbow flash and high hardness. It is commonly found as a natural clear gemstone in Brazil, Russia, and Sri Lanka before being treated. Collectors should look for even coating and check for scratches.

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Arenite (SiO2 based)

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Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

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Green Apatite on Albite

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mineral