An Art Deco Platinum, Gold, Rock Crystal, Enamel and Diamond Circle Brooch, consisting of a polished rock crystal circlet measuring approximately 31.00 mm in diameter bisected at the sides with two banded and fluted sections with applied black enamel detail surmounted with two platinum crescent plaques containing six round single cut diamonds weighing approximately 0.06 carat total, white gold fittings and pin stem on the reverse. 8.50 dwts.