Herbert Rosenthal gold and diamond bee brooch

An 18k yellow gold and diamond bee brooch with yellow gold body, head, legs and wings and a white gold upper body set with 19 round brilliant cut diamonds and ruby eyes and a roll over clasp to the pin at the back - marked for Herbert Rosenthal of New York - total diamond weight 19=1.00ct G-I/VS - weight 5.8grms - overall dimensions 25 x 20mm - c.1970 USA