Antique Long Navette Shape 4 Carats of Diamonds Bar Pin

Antique platinum and 18K gold long navette shape pin set with twenty three old mine cut diamonds measuring from 2.2mm up to 5.2mm. The diamonds are set in platinum and the pin is 18K gold. There are a few European hallmarks on the pin including the French import mark. (Due to the age the are worn and difficult to recognize.)
23 diamonds: 4.00ctw. Color: G-I, Clarity: VS2-SI2
Length: 80 mm
Width: 3 mm at the ends and 6 mm in the center.
Weight: 8.4 grams
Original fitted box included.