AN ART DECO SAPPHIRE AND DIAMOND PANEL BROOCH the central octagonal-shaped sapphire is set with four rectangular-shaped sapphires, two baguette-cut diamonds, within a surround of graduated old brilliant-cut diamonds, in platinum, 6cm. long. Accompanied by report number 78131-23 from GCS dated 29th November 2017 stating that the five sapphires weigh approximately 6.30 carats in total and that they are all natural sapphires with no indications of heating. Origin: Basaltic.