14 November 2017
AN IMPORTANT ART DÉCO EMERALD AND DIAMOND RING, BY BLACK, STARR & FROST
Set with a sugarloaf emerald, weighing approximately 17.02 carats, between diamond-set shoulders, to the openwork gallery, 1920s, ring size 5 ½
Signed B. S. & F. for Black, Starr & Frost
Accompanied by report no. 15040264 dated 22 April 2015 from the Gübelin GemLab Institute stating that the origin of the emerald is Colombia, with indications of insignificant clarity enhancement.
Report no. CS38707 dated 30 November 2006 from the AGL American Gemological Laboratories stating that the origin of the emerald is Colombia, with no clarity enhancement.
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