This is an iridescent, mid-century cocktail shaker sourced in Italy. The body is glass and the top is metal with a gold-toned finish. The body of the glass has an iridescent blue to pink shift, often achieved by using silver fume in the firing process. 

Shaker measures 8.5 inches tall and 4 inches diameter at widest. Surface wear present; consistent with age and use. See images for details.