From Gwen Stefani's $500,000 sparkler to Mariah Carey's 35-carat emerald-cut diamond, here are the most expensive celebrity ...
The Bleu Royal is another most expensive ring in the world. It is a 17.61-carat vivid blue pear-shaped Type IIb diamond. This ring also has a platinum and 18K rose gold setting with two colorless ...
If the speculation is true, Zendaya's cushion-cut diamond would rank as one of the most expensive ... in a handcrafted gold and platinum setting." It's estimated that the ring is worth $600,000.