Platinum gold swirl ring with old cut diamonds 0.10 ct

Antique old cut diamond ring

Swirl ring in 18k (750°/°°) gold and platinum set in its center with an old-cut diamond weighing approximately 0.10 ct (H SI without inclusion visible to the naked eye). French work from the beginning of the 20th century.

Finger size 51, sizing possible
Gross weight: 2.55 grams