Most people look up to the celebrities when it is about fashion and ongoing trends. The same thing is applicable in the case of diamond engagement rings as well. Most celebrities flaunt resplendent, glitzy, and enormous rocks on their fingers. Some of the biggest diamond rings in the celebrity history are given below. 20 Carat Diamond Ring of Paris Hilton The American actor, Chris Zylka, proposed to the heiress of Hilton clan with a stunning pear-shaped diamond that is set in platinum metal. He proposed to Paris Hilton when they were skiing in Aspen over the New Year's Eve. The ring he gifted was beautified by giving a split shank setting and a halo of melee diamond around the center stone. The current market value of this sparkling ring is around $2 million. Beyonce’s Emerald Cut Diamond Ring The gorgeous 18-carat emerald-cut diamond ring of Queen Bey is worth drooling over. The ring was designed by Lorraine Schwartz and was gifted to her by her husband, Jay-Z. Beyonce’s platinum ring features a split shank, which is embellished by paving with melee diamonds on it. The worth of this incredible ring is around $5 million. Evidently, this is counted amongst the expensive diamond rings in the world. Colorful Ring of Kate Middleton The diamond engagement ring of Kate Middleton is not just eye-catching, but it also holds a romantic piece of royal history. Prince William popped the question by offering her a beautiful ring that flaunts an 18k sapphire surrounded by a halo of tiny solitaire accents. Actually, this ring belonged to his mother, Princess Diana’s private collection.