This ornate pin is not marked but tests positive for gold of at least 10k. The pin weighs 6.6 grams. The leaves and tendrils are so life like an the peachy and green gold is truly lovely. The pin is 2 5/8 inches long and 1/23 inch wide. It has an old tube hinge and a modified c catch. There is also a hook at the back for a watch or charm. C. 1880 and American. Condition is very good.