3.30ct diamond & gold band ring, 1970, Mario Buccellati Published 02.11.2015 in Mario Buccellati-“The Prince of Goldsmiths”. Previous Next 3.30ct diamond & gold band ring,set with a raised brilliant-cut diamond collet, to the large openwork sculpted gold band, enhanced with brilliant-cut diamond collet lines mounted in gold, 1970, Mario buccellati