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 ...

If the speculation is true, Zendaya's cushion-cut diamond would rank as one of the most expensive celebrity engagement rings of all time. So, while the internet anxiously awaits an official ...