Bidspirit auction | An early 20th century natural

An early 20th century natural and unenhanced sapphire, diamond and platinum ring, set with a cushion shape mixed cut sapphire measuring 10.0 x 10.0 x 4.3mm, approximate weight of 3.4 carats as measured in mount, surrounded by eight cut diamonds measuring 1.7 x 1.7 x 1.5mm, with a combined approximate weight of 0.60 carats as measured in mount, size O, 4.6 grams, set in platinum. Note: Accompanied with a Gem & Pearl laboratory certificate #25005.