Vintage Art Deco Sterling Silver and AMETHYST and Diamond pin/ Brooch Marked WB 935 German c 1920

Fantastic Art Deco Sterling Silver and AMETHYST and Diamond pin Marked WB 935 German c 1920
Beautiful piece, and incredible work. Measuring 2.3" long x .47" at its widest. the measurements of the stone are 11mm x 6.1mm the amethyst, which is smooth on the top, and faceted on teh bottom, is a fantastic look. It is marked on bottom Sterling , Makers mark WB, and 935. I was told it is probably from Pforzheim, Germany. The main stone is surrounded by 18 ( what looks like)single cut diamonds, with a total carat of .30carats. then there are 20 small square cuts stones, , which i cannot tell what they are, but the piece is really a superb , and the quality is fantastic. please feel free to email me with any questions.