A RUBY AND DIAMOND RING, BY OSCAR HEYMAN BROTHERS
Set with a pear-shaped ruby within two triangular-cut diamonds, to the plain bifurcated hoop, mounted in platinum and gold, 1960s, ring size 8
With maker's mark for Oscar Heyman Brothers, no. 21461
Accompanied by report no. 15030191 dated 7 April 2015 from the Gübelin GemLab Institute stating that the ruby is of Siam (Thailand) origin, with indications of heating
A RUBY AND DIAMOND RING, BY OSCAR HEYMAN BROTHERS
Set with a pear-shaped ruby within two triangular-cut diamonds, to the plain bifurcated hoop, mounted in platinum and gold, 1960s, ring size 8
With maker's mark for Oscar Heyman Brothers, no. 21461
Accompanied by report no. 15030191 dated 7 April 2015 from the Gübelin GemLab Institute stating that the ruby is of Siam (Thailand) origin, with indications of heating
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