14k Yellow Gold Marquise Shaped Onyx Cocktail Ring framed by 25 brilliant round diamonds set in White Gold. 
 
Weight: 15.1 grams 
Width: 1 3/8'' 
Size: 7.5
Main Stone: Diamond 
Diamond Weight: (25) Approx. 0.45 Cttw 
Metal / Purity: 14k Yellow Gold & White Gold 
Hallmarks: 14k
Era: 1970's 
Condition: Pre-Owned, Professionally polished