Jewel was from the collection of Queen Nazli, former queen mother of Egypt.
Output to grow 4.4% year on year to $5.6 trillion, according to federation.
Business closed after jewelry mogul was accused of $1.8 billion bank fraud in 2018.
Lead item is a Van Cleef & Arpels diamond ring, but six of the top 10 contain the blue gemstone.
Stone from Jwaneng mine will feature in Sotheby’s Hong Kong luxury sale on April 23.
Move leaves the miner with some 50 contract customers.
10.02-carat Tiffany & Co. diamond ring is top seller, fetching $520,700.
Growth is part of strong “holiday destination” categories and trend of returning to the office, company says.
Organization will expand its initiative, primarily across digital and social platforms, aiming to reach younger customers.
Company recovers type IIb stone from stockpile material.
What drove the diamond market in 2025? The latest issue digs into the numbers.