Vintage 10K Yellow Gold Marquise Cut Sapphire w/ Diamond Accents Cocktail Ring. This ring features one marquise cut sapphire stone measuring 5mm x 3mm (total of 0.25 carats); it also features 6 round cut diamonds measuring 1mm (total of 0.06 carats). The ring is a size 4 3/4 and weighs a total of 2.64 grams. The ring is tested and stamped 10k (due to age of ring stamp is hard to see by eye); it is also stamped with a hallmark we could not make out. This pre-owned vintage ring is in good condition for its age and is ready to be worn!