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AN ATTRACTIVE ANTIQUE SAPPHIRE AND DIAMOND NECKLACE, BY BIEDERMANN
Designed as ten graduated oval-cut sapphires, each in an old mine-cut diamond quatrefoil surround, to the detachable three-stone spacers, circa 1850, 40.0 cm. (19.0 cm. section detaches to be worn as a bracelet, one small diamond deficient), in a later blue leather fitted case
Signed by Biedermann
With certificate 9809057/1-10 dated 25/9/1998 from the Gbelin Gemmological Laboratory stating that the sapphires show no indications of thermal enhancement
Designed as ten graduated oval-cut sapphires, each in an old mine-cut diamond quatrefoil surround, to the detachable three-stone spacers, circa 1850, 40.0 cm. (19.0 cm. section detaches to be worn as a bracelet, one small diamond deficient), in a later blue leather fitted case
Signed by Biedermann
With certificate 9809057/1-10 dated 25/9/1998 from the Gbelin Gemmological Laboratory stating that the sapphires show no indications of thermal enhancement
