The $500,000 heirloom might not be the most expensive ring on the list ... It was widely reported that the center stone is either a ruby or a pink diamond, while eight white diamonds flank ...

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 ...