A ruby and diamond ring, early 20th century, of cluster design, set with a cushion-shaped ruby,

A ruby and diamond ring, early 20th century, of cluster design, set with a cushion-shaped ruby, within a border of circular-cut diamonds with an openwork scrolled gallery, mounted in platinum, size O 1/2, numbered 3215, French import assay mark for platinum

Accompanied by report number 137005 dated 14th March 2024 from SSEF stating that the ruby showed no indications of heating. Minor amounts of oil in fissures at the time of testing. Origin: Burma