Edwardian Diamond, Platinum Bow Brooch. Centering one old European-cut diamond weighing approximately 0.65 ct., accented by four old European-cut diamonds weighing a total of approximately 0.85 cttw., further enhanced by one hundred and forty-six old round-cut diamonds weighing a total of approximately 1.25 cttw., set in a platinum open work bow mounting measuring approximately 25 x 49 mm, completed by a 14k white gold pin stem and catch. Total diamond weight is approximately 2.75 cttw. {Gross Weight: 6.1 dwts} Provenance: From a private Ross, California estate.