International Gems News Tiffany Empire Diamond Necklace Becomes Most Valuable Jewel Ever Offered by the Brand by Nikhil Prasad August 17, 2025 by Nikhil Prasad August 17, 2025 Gems News: A Masterpiece Beyond Compare Tiffany & Co. has unveiled its most valuable jewel ever placed on the market, the Empire Diamond Necklace, an extraordinary piece that blends heritage, …