Gemstone treatment
Beryllium Diffusion
Color may penetrate deeply and appear unusually even or concentrated near facet edges. Standard microscopy can be inconclusive, especially after recutting.
01
What to look for
Color may penetrate deeply and appear unusually even or concentrated near facet edges. Standard microscopy can be inconclusive, especially after recutting.
02
What it means
Beryllium diffusion introduces light elements during high-temperature heating to alter body color. It must be disclosed and usually reduces value compared with natural color.
03
Expert move
Treat unusually vivid orange, yellow, or padparadscha-like sapphire with caution. Definitive detection usually requires advanced chemical analysis.