An approach to understanding the factors in the emerald enhancement clarity grading system used at CDTECGemlab

The iron-titanium charge transfer (Fe-Ti CT) is mentioned in numerous articles as the source of the

Purple jadeite, renowned for its distinctive purple hues and rich cultural connotations, is highly a

Fancy colour diamonds that derive their colour from nitro- gen-related defects (such as N3/N2 center