Diamond Leaf Brooch. Estate platinum and 18k yellow gold brooch with 81 brilliant cut diamonds and 18 tapered baguette-cut natural diamonds in the platinum setting. The 81 round brilliant cut diamonds are made up of 48 diamonds of 0.05cts each, 24 diamonds of 0.10cts each, and 9 diamonds of 0.15cts each. The 18 baguette cut diamonds weigh 0.05cts each. Total weight is approximately 9.6cttw.