All LEGION Paris jewelry comes with a certificate of authenticity and bears the following hallmarks:

- Our master hallmark authenticates the piece of jewelry and its origin. Like a signature, it is made compulsory by the French Customs.

- 925" authenticating the legal title of 925/1000 silver for all silver jewelry.

- An eagle's head for all gold jewelry over 3g authenticating the legal title of the gold 750/1000. It is stamped directly by the French Customs control service.

- A Minerva head for all silver jewelry over 30g authenticates the legal title of the 925/1000 silver. It is hallmarked directly by the French Customs control service.