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Heat treated sapphire
2022
Instituto Gemológico Español (IGE)
Madrid, Spain
One of the most common ones is the heat-treatment (that can be from medium to high temperature), enhancing their color and clarity. It is quite common in corundum, tanzanite and zircon.
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Details
- Title: Heat treated sapphire
- Date: 2022
- Location: Madrid, Spain
- Type: Photograph
- Medium: Natural gesmtone
- Photograph: Ana de Bustos | Instituto Gemológico Español
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