Of angular design, this bague à pont or bridge ring from the 40s is set with two central diamonds flanked by six small diamonds on each side forming a cruciform, in platinum and 18k gold. 

French, 1940s, with French control mark

Size 6 1/4. Top or ring measures 1 in. across x 5/8 in. long (2.5 x 1.6 cm)