Pre-Auction Analysis: February 3, 2023, Sotheby’s HK
Pre-Auction Analysis: February 3, 2023, Sotheby’s Hong Kong, Important Jewels Our Sotheby’s Important Jewels Pre-Auction Analysis focuses on elements that are not always visible to the untrained eye. We discuss characteristics such as Inner-Grade, Color Dispersion, and Undertone – collectively termed IDU. Professionals use the IDU method intuitively when analyzing a Fancy Color Diamond. The […]