7.20 Carat Untreated Burma Sapphire Diamond Gold Cluster Ring

A turn-of-the-century Burmese sapphire and diamond cluster ring, the central round-shaped faceted sapphire weighing 4.84 carats, accompanied by GAGTL certificate stating to be of Bur...

An elegant emerald and diamond engagement ring, set at the centre with a 7.20 carat emerald-cut Colombian emerald in a surround of round brilliant-cut diamonds and flanked by baguett...

Burmese sapphire and diamond cluster ring. Set to centre with an oval old cut natural unenhanced Burmese sapphire in an open back claw and rubover setting with a weight of 2.64 carat...

Antique natural Burmese sapphire and diamond cluster ring. Set vertically with an oval old cut natural unenhanced Burmese sapphire in an open b...

Edwardian Burmese sapphire and diamond cluster ring. Set to the centre with a cushion shape old cut natural and unenhanced Burmese sapphire in an open back claw setting with an appro...

The exquisite 5.70-carat ruby and 4.54-carat diamond showcased in this bypass ring create a tantalizing interplay. The pear-shaped crimson gemstone is certified by the American Gemological Laboratories as being Burmese in origin and all natural, with no indications of thermal treatment to influence the stone's color. The rich red ruby exhibits the coveted hue for which the best Burma rubies are prized. Political unrest caused the closure of the mines in the early 1960s, making these gems exceedingly rare and sought-after. The pear-shaped Golconda diamond is equally remarkable, certified by the Gemological Institute of America as a highly desirable type IIa diamond with VVS1 clarity. As the GIA notes in its accompanying letter, "Type IIa diamonds are the most chemically pure type of diamond...