The 4mm Tennis Chain Round Cut in black brings a heavier, darker take on a classic silhouette. Up to 63 carats of hand-set black diamond simulants in a round cut sit against a blacked-out finish — deep, rich, and striking from every angle. The higher carat weight makes this the heaviest iced option in the round cut lineup, with a look that's bold without being loud. Pair it with the matching black bracelet or let it stand alone as a piece that does things differently.