This is a vintage, 20th century, late 1930's, large pin brooch in silver tone metal and solid backing an inset paste rhinestones in clear and blue, some are set like marcasite and the blue are marquise cut. The overall form is similar to a mirror imaged paisley with an S-scroll in the center. This is unsigned, unmarked, likely American made. The estimate is based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.