White Gold Rhodium Bonded Onyx and Pave Cubic Zirconia Trimmed Ring in Silvertone. The Pave Trim Onyx Ring is quite large and should cover the segment of the finger from the knuckle to the second joint. White Gold Rhodium Bond is achieved using an electroplating process that coats the item with heavy layers of rhodium-- a close cousin of platinum that costs three times as much and gives our jewelry a platinum luster. Carat weight 2.6 (ct).