CLEAN : Diamond fetches record $30.6 million

The transcript details a series of high-profile jewelry auctions, including record-breaking sales of diamonds and necklaces. It highlights the significance of these auctions in major centers like Hong Kong, Geneva, and New York. The auctions feature rare and valuable items, with discussions on valuation, naming conventions, and the role of private collectors. Sotheby's achievements in Asia are also emphasized, showcasing its status as a leading auction house.

What factors influence the naming of diamonds as mentioned in the text?

What was the presale estimate for the jadeite bead necklaces?