1960s Diamond Emerald Sapphire 18 Karat Yellow Gold Bracelet For Sale 1960s Alexander Kower Sapphire Diamond Gold Bracelet Victorian Diamond and Sapphire Serpent 18 Karat Gold Bracelet, circa Antique Circa 1870s 18k Gold Natural Diamond Sapphire And Ruby Bracelet Antique Circa 1870s 18k Gold Natural Diamond Sapphire And Ruby Bracelet. A rare one off Alexander Kower bypass bracelet. Signed hand constructed yellow gold hinged item features a pear shaped prong set Ceylon sapphire (approx. 3ctw), deep blue keystone baguette sapphires (2. 5 ctw) and pave set diamonds (approx. 1. 25ctw G H VS). A fine mid century modern Southwest studio item (Scottsdale AZ) fits a 7" wrist. Item #DS130