This is a Lovely Vintage Art Deco Necklace with Black Onyx in 1/20 12K Gold Fill. The 3 Oval Onyx Stones are Prong Set into Oval Settings and accenting them are Bows with a Gold Ball at Center of Each.
The Necklace can be worn from 14" to 16 3/4" in length with the extender . It is Marked AMCO 1/20-12K G.F. on the hang tag and is in Very Good Condition.
Black Onyx Gold Filled Necklace AMCO 1/20-12K GF Art Deco