5. Bleu Royal - $43.8 million 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 ...

One of the world's most iconic musical duos ... Mariah Carey and billionaire James Packer broke the record for most expensive celebrity engagement ring in 2016 with a whopping 35-carat, emerald ...

From Gwen Stefani's $500,000 sparkler to Mariah Carey's 35-carat emerald-cut diamond, here are the most expensive celebrity engagement rings ever. From Gwen Stefani's $500,000 sparkler to Mariah Carey ...