Lab NotesGems & Gemology, Fall 2015, Vol. 51, No. 3
Yellow HPHT-Processed Rough Diamond
Sally Chan
Figure 1. This 2.47 ct rough diamond was HPHT processed to improve its color. Unlike conventional HPHT-treated diamonds, this stone has a natural-looking surface. Photo by Jian Xin (Jae) Liao.
Figure 1. This 2.47 ct rough diamond was HPHT processed to improve its color. Unlike conventional HPHT-treated diamonds, this stone has a natural-looking surface. Photo by Jian Xin (Jae) Liao.
