A French Art Deco Octagonal Diamond & Onyx Brooch in Platinum

c. 1920s, platinum octagonal brooch featuring an Old European cut diamond weighing approx. 0.65 ct with an average color grade of I - J and an average clarity grade of VS bezel set with milgrain accents in the center amid striped lines of alternating channel set faceted black onyx and Old European cut diamonds bead set, all additional diamonds weighing approx. 1.80 ctw, French hallmark on pin back, 1 3/8 in. W, 10.2 grams

Estimate:£559.57

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