15 November 2016
A LATE 19TH CENTURY SAPPHIRE AND DIAMOND BROOCH
Set with an octagonal step-cut sapphire, weighing approximately 12.07 carats, within an old-cut diamond openwork frame, 3.0 cm, with Austro-Hungarian assay marks, mounted in silver and gold
Accompanied by report no. 79136 dated 10 March 2015 from the SSEF Swiss Gemmological Institute stating that the origin of the sapphire is Kashmir, with no indications of heating.
Report no. CS62202 dated 20 February 2015 from the AGL American Gemological Laboratories stating that the origin of the sapphire is Kashmir, with no heat enhancement and no clarity enhancement.
Report no. 15025259 dated 15 February 2015 from the Gübelin GemLab stating that the origin of the sapphire is Kashmir, with no indications of heating and an Information sheet on 'Unheated sapphires'.
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