The pendant is marked 14k and is solid yellow gold. It weighs 5.3 grams. It is signed Asch Grossbardt. The piece measures 3/4 " x 7/16". Inlayed are several types of shell. They are mother of pearl , Abalone, Coral , and Spiny Oyster. The opening at the top will accommodate up to a 4.5 mm chain.