Vintage gold and diamond signet ring

Signet ring in 18k (750°/°°) gold composed of a striated gold plate and set in its center with a modern brilliant-cut diamond of very good quality (GH VVS) weighing approximately 0.4 ct. French work from the 1970s. Presence of a maker's mark and an eagle's head hallmark for 18k gold.

Finger size 56.5, sizing possible
Gross weight: 8.64 grams