Vintage 18K gold plated filigree tiger eye pendant on 925 liquid silver chain

Vintage handmade Southwestern Western necklace with natural tiger eye stone of good quality. The chain is handmade of liquid silver and is 17" long. Not stamped, but most likely it is from the 50th, Southwestern, and sterling silver. The pendant is 1.5" long (with bail), handmade with asymmetric intricate filigree detailing, and stamped 18K on the bail. I am assuming it is 18 karat gold plated brass.