Antique natural diamond navette ring 3.5ctw

An antique oval-shaped large navette style ring with a French import mark. The ring has approximately 3.5 carats of natural antique diamonds. Most of them are old European cuts mixed in with some Rose cuts. Top craftsmanship the ring even has tiny little rose cuts set in between the prongs 

The ring is made of 18 karat gold and it's currently a size 8 but can be sized. The ring faces is 30 mm by 13 mm.