This page lists the many types of treatments and enhancements used to improve gemstone appearance and durability.
Using acids or oxidizing agents to remove unwanted colour from a gem.
HTHP (High-Temperature High-Pressure)
Treatment for diamonds.
Treament with ionizing radiation to enhance or change colour of gem.
Using a laser to burn a hole into a gemstone to aid removal of inclusions.
A-Z list of all other treatments
Glass/Plastic/Resin Infilling / Fracture Filling / Flux Healing
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