Posted 7 years ago
This beautyful cobalt blue enameled brooch has a decoration of silver with very nice rose cut diamonds and is of French origin. The hallmarks you can see on the back site (photo 3) is French for a patent because of the hidden compartment. It's tested for 18K as all antique French jewelry. It has is a rare hidden compartment. Have you any idea from the time period or where this compartiment can be used for?