Kay Jewelers Diamond Solitaire Ring 1/2 ct Round-Cut 14K White Gold- Solitaires: It has been nearly a century since Marcel Tolkowsky revolutionized diamond cutting with the original Ideal Cut Diamond. This stunning solitaire ring features an independently certified, 1/2 carat Tolkowsky® round brilliant diamond as its breathtaking centerpiece. Platinum prongs secure the diamond, and a 14K white gold band completes the elegance. All Tolkowsky® round diamonds are certified Ideal Cut with the Hearts & Arrows Pattern and each ring comes with a certificate of authenticity. This fine jewelry ring comes with a unique presentation box.