An early 20th century ruby and diamond cluster ring, C1910, the cushion-shaped ruby weighing

An early 20th century ruby and diamond cluster ring, C1910, the cushion-shaped ruby weighing 4.19cts, set within a surround of old circular-cut diamonds in platinum, French mark and numbered 16400 to inside shank, size O

Accompanied by report number 139028 from SSEF dated 18th June 24 stating that the ruby weighs 4.198cts, with no indications of heating, origin: Burma