Art Deco Ruby Shamrock clover Enamel Crescent moon in 10K gold

circa approx. 1930-1940, this dainty crescent moon brooch pin adorns with Shamrock clover which it inlay with green enamel, in the center has a round Ruby. C-spring clasp.
Size 19.4 x 17.8mm, weight 1.5gm,
No hallmark, tested for 10K