This Reja sterling "Willow Tree" brooch is from the Gardenesque series produced in 1947. Gold washed front over sterling. The back is rhodium plated sterling. There are tiny rhinestones leaves and base of glass moonstone cabs and pink rhinestones.
I have only seen this item a few times times in many years.
It is 2 1/4" x 1 3/4" . All of the stones are present. Excellent condition.