A wonderful diamond Naval crown sweetheart brooch.
 
The brooch is fronted in platinum with a gold reverse and mounted onto a platinum and gold bar in a design typical of the Edwardian era.
 
The sails of the crown are finely set with diamonds.
 
This would have been made for a Naval officer to give as a gift to a loved one to signifiy that the giver was in the Navy and to promote partiotism.
 
Sweetheart brooches have been popular since the early 20th century and were given to wives, mothers and girlfriends by servicemen as mementos and reminders of the absent loved one. They were worn to show pride in having a sweetheart who was serving his country. They were made for every budget from base metal to platinum and designs were made for every aspect of the military. 
 
Era: Edwardian, 1901 - 1920
Measurements: Brooch 5.5 cm in length,
Crown 2.4cm in length, 1.8cm at widest point.
Total diamond weight estimated 0.70 carats
Hallmarks: Stamped 18CT PT