Estate Early 20th Century platinum diamond pendant necklace

Estate Early 20th Century platinum diamond pendant necklace. This pendant, converted from a brooch, features two (2) marquise cut diamonds (2=0.20 ctw) and eleven (11) full cut diamonds (11=1.03 ctw) prong set with a scalloped edge frame lined with old cut diamonds (25=0.25 ctw) bead set. It is s upended from a solid loop bail on a 14kt white gold 1.9mm 19" chain with a tongue in groove clasp with folding safety lock. DWT: 6.2