Jewel was from the collection of Queen Nazli, former queen mother of Egypt.
Jewel, centering 3.60-carat diamond, fetches $681,600 in London.
Lot sells for $541,800 in New York, within estimates.
49.91-carat diamond ring fetches $2 million, beating its $700,000 high price.
Piece brings in $778,400 at Hong Kong sale.
Marie-Laure Cérède will be responsible for the house’s precious and high-end collections.
New York Magnificent Jewels rakes in $49.7 million.
Guidelines aim to enhance transparency in labeling and describing synthetics.
Jewel beats $150,000 top estimate, raking in $2.2 million in New York.
Anglo American moves forward with the sale of its 85% share in the diamond producer.
Market Comment: June 11, 2026