The 18" vintage chain is made of Gold Filled. The Round Lavaliere antique pendant has touch marks and was tested with nitric acid and a "kee" tester to be 14k solid yellow gold. The pendant without the chain weighs 3.0 grams and is 1" in diameter. Bezel set and dangling in the center is a pear shape green natural tourmaline with an approx weight of 2.00 cts. The pendant also holds 4 round small natural pearls,