A brooch

060135   A brooch, gold/ platinum/ diamonds, 1920s
gold hallamrk 585, platinum 
stones:
1 x diamond, old diamonds cut ~ 0,27 ct Si/K
2 x diamonds, old diamonds cut ~0,17 ct Si/K ~ 0,16 Si/K
2 x diamonds, old diamonds cut  ~ 0,07 ct Si/K
w. 3,43 g