This swirly pin is very Jackie O! It is marked 14k and is full of genuine sapphires and tiny diamonds. The sapphires are a very pleasing light blue colour and are 4mm and weigh approx 4.2ct. The tiny diamonds are set in white gold as is the sapphires, and they weigh approx 0.26ct which includes the 2.5mm centre diamond. The swirling ribbon pattern is very pleasing and the brooch weighs 12.9 grams. C. 1960 and American.