If He Loves You, He'll Buy You the World's First All Diamond Ring 78.61K Leah Beckmann 03/22/12 05:15PM Filed to: Ladies Ladies Diamonds Marriage Jewelery Tweetg Ladies, make sure when you do get your man to put a ring on it, it's this 150 carat "world's first diamond ring." Asking him to plunk down $68 million is a good way to test him and his love for you.[Image via Shawish Jewelery]