David Yurman Vintage Ruby Onyx 925 Silver 18k Yellow Gold Quatrefoil Stud Earrings featuring the quatrefoil shape with the cable design carved onyx mounted in the center of the earrings and accented with 4 bezel set rubies on yellow gold top frame on sterling silver. They have Omega clip backs. Material: 18k yellow gold and sterling silver Gemstone: Onyx and ruby Weight: 21.8 g Dimensions: Width: 0.79 in (20 mm) Length: 0.79 in (20 mm) Period: 1980-1989 Previously owned in excellent condition. Retired and extremely RARE!