For sale is this extraordinary, 18k gold bar pin with a platinum top, diamonds and natural sapphires. The pin measures 5/16" wide, weighs 6.6 grams and has a wonderful locking clasp that holds it closed securely (these were only found on quality pieces). The center diamond is 0.05 points and surrounded by twelve princess cut natural sapphires. There are two 2.5 point rose cut diamonds and ten 0.01 point rose cut diamonds. The diamonds are all eye clean with no damage or chips. No damage to the bar pin and it dates to the late 1800's. The mark is difficult to see and photograph and both the gold and platinum have been carefully acid tested.