The bar pin does not have a metal mark but was tested with Platinum acid and a AuRACLE  metal tester to be solid platinum. It weighs 8.6 grams and measures 2 1/4" x 3/4". Bezel set in the center is a .55 ct European cut natural diamond . It is SI3 and I color. Set to the East and West of the center diamond is a square nice green natural natural emerald. The 2 emeralds have an approx total weight of .85 cts. Set throughout the remainder of the pin are 28 rose cut natural diamonds . Note that there is one missing.