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  • Cover of Gems & Gemology Summer 2021 issue, featuring mixed-media painting “Overblue” by John McDevitt King.

Summer 2021

  • Sold Out

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

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SKU: 4302103