(Lot of 3) Emerald, enamel, yellow gold jewelry Including 1) enamel, 21k yellow gold bib link style necklace, completed by a link chain and clasp, forming 14 inches in length; gross weight 30.65 grams; 1) pair of oval-cut emeralds, weighing a total of approximately 0.30 ct., set in 14k yellow gold stud mountings; together with 1) single round-cut sapphire, 14k yellow gold stud earring, gross weight 31.75 grams