This wonderful brooch was made in the early 1900s. It does not have a gold mark but was tested with nitric acid and a "kee" tester to be solid 18k gold with a white silver front that holds the diamonds. The piece weighs 11 grams and measures 2 1/4" x 1". The pearl which sits in the center measures 27.5 mm x 14.0 mm. Set in silver are 32 round single cut natural diamonds with an approx total weight of .32 cts. The brooch is in great condition.