SOLD / The Art Deco Brooch does not have a metal mark but was tested with platinum acid and a "kee" tester to be solid platinum. It weighs 6.5 grams and measures 2 3/4" x 1". Set in the center is a mine cut natural diamond with an approx weight of .05 cts. It is surrounded by 38 rose cut natural diamonds. This piece is in excellent condition.