This is a very unique Vintage necklace from the 1960's. It is silvertone costume jewelry.
It has a large spiral shaped medallion pendant with long chain dangles.
The pendant is very detailed and large, measuring 4 3/4 inches long, including its chain dangles.
The chain is 24 inches around with a clasp.
In excellent condition!
Reminds me of something a 1960's "hostess" would wear with one of those long gowns.