Summer 2021

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Feature articles from this issue: Measurement and Characterization of the Effects of Blue Fluorescence on Diamond Appearance by Yun Luo, David Nelson, Troy Ardon, and Christopher M . Breeding Detection of Color Treatment and Optical Brightening in Chinese Freshwater “Edison” Pearls by Chunhui Zhou, Joyce Wing Yan Ho, Sally Chan Shih, Tsung-Han Tsai, Ziyin Sun, Stephanie Persaud, and Li-Jian Qi Pearl Classification: The GIA 7 Pearl Value Factors by Joyce Wing Yan Ho and Sally Chan Shih Namak Mandi: A Pioneering Gemstone Market in Pakistan by Habib Ur Rehman, Bilal, Syed Owais, Obaid Ur Rahman, and Andy H. Shen GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302103 Show more