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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