mineral
Titanium Amethyst Geode
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer
Hardness: 7 (Mohs scale), Color: iridescent gold, green, purple, and blue over natural violet. Luster: Metallic (coating) and Vitreous (internal). Crystal structure: Trigonal/Hexagonal crystals.
- Color
- iridescent gold, green, purple, and blue over natural violet
- Luster
- Metallic (coating) and Vitreous (internal)
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Physical properties
Hardness: 7 (Mohs scale), Color: iridescent gold, green, purple, and blue over natural violet. Luster: Metallic (coating) and Vitreous (internal). Crystal structure: Trigonal/Hexagonal crystals.
Formation & geological history
Formed as natural amethyst in volcanic geodes via hydrothermal activity. This specimen has been treated with a lab process called Magnetron Sputtering, where thin layers of titanium or gold are bonded at a molecular level to the crystal surface.
Uses & applications
Primarily used for interior decor, crystal healing collections, and as a novelty gemstone specimen.
Geological facts
The rainbow effect is caused by a phenomenon called thin-film interference. While the internal crystal is natural amethyst, the brilliant metallic color is man-made. It is often sold under names like 'Aura Amethyst' or 'Rainbow Quartz'.
Field identification & locations
Identify by looking for a natural amethyst geode base with a metallic, iridescent sheen that does not occur naturally on quartz. Natural iridescent minerals like Peacock Ore (Chalcopyrite) have different crystal structures and hardness.
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