This bouquet of everlasting flowers is made from a combination of 18-karat yellow gold and platinum. As mentioned in the blog, "Signature Series-Volume 26" by Joden Girl, each flower is a round cluster of twenty-eight petals sitting atop high polished gold stems. The center of each flower is a round cluster of twenty-eight volute-shaped petals. Nestled deep with the center of each flower is a singular round brilliant diamond surrounded by six sapphires. The three diamonds have a total weight of 0.12 carat. The eighteen sapphires have a total weight of .90 carat. This piece measures 1½ inches long and 1 ¼ wide at the widest point. The back of this designer brooch is stamped "Tiffany & Co.", "Irid. Plat." and "18K"