Tiffany & Co. took a dive back into the ocean again this year. For its 2025 Blue Book high jewelry collection, there were seahorses, starfish, coral, waves and more to complete the “Sea of Wonder” ...

When a Middle East royal recently let it be known that he was looking to invest upwards of $100 million in gemstones, word spread quickly and soon more than one well-connected dealer was jetting to ...