How celebrity engagement rings are fueling the diamond industry
When Zendaya stepped onto the Golden Globes red carpet in January, the Bulgari ambassador was bedecked out in — what else? — Bulgari jewels, including a massive diamond and 31-carat tourmaline necklace. But it was the one non-Bulgari piece of jewelry she wore that caught all the attention: an east-west cushion cut diamond engagement ring,…