一场荟萃全球领先珠宝创意及高品质彩色宝石与珍珠的国际赛事。 Awarding Excellence in Design and Craftsmanship with The Most Precious Gems.

Owing to the innate characteristics and growth environment of emeralds, clarity enhancement is a common practice in the trade. At present, various types of fillers have been applied to emeralds, including colorless oil, wax, resin, etc. Experienced dealers are familiar with these fillers. However, Guild Gem Laboratories found distinct green external materials in several emeralds. Is this a new type of filling? How will this discovery affect the current emerald market? In this paper, the type, causes and effects of this green external material will be explained in detail.