An antique diamond and pearl bow brooch

细节
An antique diamond and pearl bow brooch
The openwork scroll and ribbon bow with diamond collet centre suspending a grey and white pearl twin tassel drop, each pearl with diamond cupola surmounts, circa 1880, 8.5cm. wide
With certificate 4253151 dated 21/6/1993 from The Gemological Institute of America stating that the grey pearl is natural, natural colour weighing 12.84 carats