A LATE 19TH CENTURY SAPPHIRE AND DIAMOND BROOCH

A LATE 19TH CENTURY SAPPHIRE AND DIAMOND BROOCH
Centering upon a cushion-shaped sapphire, within an openwork old-cut diamond cluster and frame, enhanced at the top with a larger old cushion-shaped diamond, late 19th century, 5.4 cm
Accompanied by report no.15030193 dated 7 April 2015 from the Gübelin GemLab Institute stating that the sapphire is natural with no indications of heating