The Cathedral Three Stone | OvalThree Stone Oval Cut Cathedral Ring with Pear Diamond Accents Quietly iconic. The Cathedral Three Stone gives a classic silhouette a modern refresh. A polished, tapered band rises to a sculpted basket, where two pear shaped side stones frame your oval cut center diamond. With its low profile and clean lines, this three stone cathedral engagement ring stacks seamlessly with your wedding bandand will turn heads for years to come.