Early 20th century emerald and diamond cluster ring, c.1910, millegrain set with a rectangular emerald-cut Columbian emerald, 1.51ct,

Early 20th century emerald and diamond cluster ring, c.1910, millegrain set with a rectangular emerald-cut Columbian emerald, 1.51ct,
Price: £20,000-£50,000
Ref No. 03496
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Description
within a square border of old single-cut diamonds, tapering fluted shoulders and reeded shank, pierced key pattern to the gallery, mounted in platinum, apparently unmarked, accompanied by AGL report no. CS61693 giving the Colombian origin opinion for the emerald and that it shows no evidence of clarity enhancement ('no oil')
Cluster 1.1 x 1.1cm / 7/16 x 7/16''
Weight: 4.5g
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