SS Elongated Rhombus shape Brooch, in Gray-Blue enamel, Marked, Vintage

SS Elongated Rhombus-shaped Brooch, edged in light Grayish Blue enamel enhanced by Textured Silver finish in the center Well-made and understated piece with the muted Blue pattern on Silver 3" W X 1/2" H Stamped "S STERLING 3341-70" Vintage Mint vintage condition - shows signs of Silver oxidization that is quite normal for a Vintage piece