18k Golden Swan with a Spray of Diamonds and Pearls

This is a fabulous solid 18k gold vintage Swan Brooch with a ruby eye and a tail of diamonds and pearls. This 18k swan is 35mm h x w and has 8 brilliant 2.5mm diamonds and 15 4mm round pearls all attached to gold sprays to makeup the tail feathers. The textured gold work is absolutely gorgeous. Weight is 16.3 grams. I bought this from an elderly lady years ago whose mother-in-law was an actress in the movie industry. I wish she would have shared her name. If you know anything more please share. Thank you for looking.