看过了GRS的说明书,上胶填充,优化, 无色油的多少都会说明,
究竟是上百美金的检验报告, 很好的检验书.
附上原文:
•CE(O): Grading of Clarity Enhancement of Emeralds specified as None, Insignificant, Minor, Moderate, Significant.
"Dried out features" indicates that materials describecd in category (O) are removed from cracks and that the gemstone's clarity can potentially be improved in a later stage by a treatment.
•Other treatments will be specified on the front page as following:
C.) Coating, D.) Dyeing, O.) Significant application of colored and/or colorless oil and/or epoxy-like resins and/or wax, R.) Irradiation, use of nuclear bombardment, U.) Surface diffusion, or any combination of the above.
