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Feature articles from this issue: A Guide to Diamonds with the 480 nm Absorption Band by Mei Yan Lai External Morphology and Internal Zonal Structure of Macle Diamond by Ahmadjan A bduriyim and Masao Kitamura Characterization of “Orange Peel” Surface Microstructure of White Nephrite from Russia: A Unique Pseudomorph by Meiyu Shih, Guanghai Shi, and Biqian Xing GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 930-2503 Released: 12-3-2025 Show more