Diffusion treated
拡散処理／カクサンショリ
漫反射处理
Diffusion treated
Traitement par diffusion de la couleur
Glossary
Thematic
Jewellery, Technic
A treatment used on gemstones to enhance their colour. The diffusion process only colours the outer surface of the stone, The CIBJO prohibits the sale of diffusion treated gemstones without mentioning the treatment.