Lot 10. An Art Deco Colombian emerald and diamond ring, circa 1925. Estimate US$ 7,000 - 9,000 (€6,600 - 8,500). Photo: Bonhams.

centering a triangular step-cut emerald, weighing approximately 3.70 carats, accented by calibre-cut emeralds, old European and baguette-cut diamonds, set overall in an asymmetrical mount; estimated total diamond weight: 2.10 carats; mounted in platinum; size 6

Accompanied by AGL report # CS 1079264, dated October 21, 2016, stating the central emerald as: Colombian origin, insignificant traditional clarity enhancement.

Bonhams. FINE JEWELLERY, 24 Apr 2017, 15:00 EDT, NEW YORK