Art Deco Old Mine cut diamond cluster ring in platinum

Art Deco Old Mine cut diamond cluster ring in platinum. Set vertically with an estimated 1.53ct cushion shape Old Mine cut diamond in a square collet setting and an estimated 1.50ct cushion shape Old Mine cut diamond in a square collet setting, flanked to either side with four cushion shape Old Mine cut diamonds in square collet settings, to a geometric cluster design with fine grain claws, millegrain borders and an open crosshatch gallery, flanked to either side with raised trumpeting shoulders which smooth to a solid shank.