Every Signature diamond is cut to the highest standards of brilliance. Each ring, pendant, and earring in our Signature diamond jewellery collection is crafted with the finest platinum and perfectly matched diamonds.
Blue Nile Signature Diamonds are the top 1% of diamond cuts in the world, sourced exclusively for us. Cut to perfect proportions, each round and cushion-cut diamond in this collection exhibits the Hearts and Arrows effect for an exceptional amount of brilliance. Crafted in the U.S. in enduring platinum, each piece is accompanied by certification from The Gem Certification & Assurance Lab, ensuring it meets the meticulous quality requirements of the Blue Nile Signature Collection.