Brooch transformable into a jabot pin Rose and old-cut diamonds, French assay mark for platinum (950‰) and French import assay marks for 18K yellow and white gold (750‰), metal pinstem support, French maker’s mark (Joseph Chaumet), circa 1900, Joseph Chaumet monogrammed fitted case Diamonds: for an approximate total weight of 14.50-15.50 carats Size/Dimensions: 7.7 x 7.9 cm Gross weight: 31.47 grams Please note that the brooch is not signed Chaumet.

From a French noble family