Weighs approx 1.4 gram and measures 5.8cms high. face is 13mm in diameter. The rear of the pin is very crudely stamped 14K. Needs a good clean.
Not stamped but acid tested as 10K white gold & looks like its from the Art Deco period. Diamond was tested with a Diamond tester. Weighs approx 1.3 grams excluding safety clasp & is 5.8cms high.