Antique Diamond Horseshoe Necklace

Measuring approx. 1 11/16 inches, set with twenty-nine Old European cut diamonds weighing approx. 2.25ctw., and two Swiss cut diamonds weighing approx. 0.06ctw., fashioned in 14k white gold. Stamped 14K and 585.?The chain measures 17 3/4 inches long, with a second loop at 16 1/2 inches so it can be worn shorter.