This is a stunning vintage Art Deco filigree bar pin set with 9 single cut round diamonds totaling approximately .57 ct. It is 14K white gold (unmarked but tested). The brooch fastens with an old style safety catch. It dates to the 1920s.
It measures about 2 1/2 inches long by about 1/4 inch wide. It is in very good condition with a slight bend to the pin stem.