Old tourbillon ring, in 18k yellow gold, platinum and diamonds

Antique swirl ring in 18k yellow gold and platinum.

The main diamond weighing approximately 0.30 ct is old cut, and 14 rose cut diamonds.

French work.

Circa 1900 (Belle époque)

Finger size: 57 ( FR )

Gross weight: 3.78 g

Hallmarks: horse head (1838-1919)