Looking for an Emerald Cut Engagement Ring? The patented Crisscut Emerald outshines the average diamond emerald shaped engagement ring. View the collection! The Crisscut® Emerald diamond has an elongated shape with cut corners that emphasize clarity. As most Emerald Cut diamonds sparkle less than other diamond cuts, this is not the case for the Crisscut Emerald, thanks to our patented crisscross faceting. The elegance and beauty of a classic Emerald Cut, with unmatched brilliance.