This is a brand new, stylish 9 carat gold chain, which is 16″ long and 0.7cm wide. Because it is a snake chain, it looks like one solid gold string. There is a full hallmark on it, but it is so tiny that I cannot make out the details. The number 375 for 9 Ct gold, however, is clearly visible (see photo). It weighs 1.8 grams. The loop is narrow enough to fit through all sorts of hangers.