569
A sapphire ring, early 20th century, collet-set with a cushion-shaped sapphire measuring
A sapphire ring, early 20th century, collet-set with a cushion-shaped sapphire measuring approximately 9.5 x 7.4 x 3.9mm, to an intricately pierced and engraved gold mount, size N1/2
A verbal report from GCS states that the sapphire is of undeterminable origin, with no indications of heat treatment