Eary 20th century emerald and diamond ring by Marcus, American c.1910

Eary 20th century emerald and diamond ring by Marcus, American c.1910
Price: £20,000-£50,000
Ref No. 04087
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Description
, the rectangular step cut emerald in a pierced double border of old single cut diamonds, the outer border meeting and extending as two tapering lines down the shoulders, millegrain set, mounted in platinum, signed 'MARCUS', the emerald approximately 1.15ct, the diamonds approximately 0.50cts in all
Length of cluster 12mm
Emerald approximately 7.0 x 5.5 x 3.8mm
Weight: 4.5g
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S.J. Phillips