Vintage gold and diamond signet ring

Signet ring in 18k gold (750°/°°) 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 master's mark and an eagle's head mark for 18k gold.

Finger size 56.5, Adjustable size
Gross weight: 8.64 grams