"Tank Verneuil And Diamond Signet Ring, 18 Carat Gold."
Tank ring set with a red Verneuil in a diamond surround. Dimensions of the ring head: 15.16 mm x 17.63 mm 4 old cut diamonds of approximately 0.40 carat in total as well as an entourage of 20 rose cut diamonds. Finger size: 53.5 Free measurement, contact me. Weight: 11.6 grams. French hallmark: Eagle's head. Delivered in a box and with an invoice. Free and insured shipping. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato