Kay Jewelers Diamond Engagement Ring 1 7/8 ct tw Round-cut 14K White Gold- Engagement Rings: It has been nearly a century since Marcel Tolkowsky revolutionized diamond cutting with the original Ideal Cut Diamond. To this day, the Ideal Cut remains the benchmark for industry excellence, and the name Tolkowsky® is synonymous with unsurpassed excellence. A gorgeous 1 carat Tolkowsky® round diamond takes center stage in this sensational engagement ring for her. Bezel-set round diamonds sparkle below the center while brilliant channel-set princess-cut diamonds line the 14K white gold band. The engagement ring has a total diamond weight of 1 7/8 carats. Each Tolkowsky® diamond ring comes with a certificate of authenticity and independent certification of the center stone.