Roberto Coin NABUCCO Diamonds & 18k White Gold Open Flex Bracelet. This bracelet is by Roberto Coin from his NABUCCO collection, it is crafted from solid 18k white gold and has a 13mm wide form, the band has a fancy ribbed design, the front adorned with sparkling diamonds with a flexible open back band which allows for easy access round the hand. It is fully hallmarked by the designer with the iconic ruby stone. Material: Solid 18k white gold. Hallmark: Roberto Coin Nabucco 18k Diamonds: 0.58 total carat weight with G color and VS1 clarity. Measurements: 6.75" long and 13mm wide x 7mm high Weight: 56.0 grams Stock#: 40913