LUSTERN, 1/20-12K GF, JEWELS, Manufactured, Vintage, Mesh Chain Necklace . This necklace weighs 21.1 grams. The measurement of this necklace is about 16" long by 5/8" wide at the widest. This necklace is marked LUSTERN 1/20-12K GF, see 7th & 8th photos. What I can read on the clasp is 12K G.F, see 9th & 10th photos.  I guarantee that this is as described.   My Price is $120.00   FREE Shipping!   I combine shipping.