This is an exceptionally long chain, which is made with round links of 9 carat gold. The chain is 30 1/2″ (78.5cm) long, so that I can wrap it twice round my neck and still have about 2 inches of a gap. The individual links have a diameter of 2mm. The chain is stamped 9K and 375 along with other symbols, which may be import marks (see photo). The maker’s initials are C.C. The gold is of a rich, yellow colour. The chain weighs 15.20g and is in excellent condition.