These earcuffs are replicas of those worn by Belle in the ballroom scene. The earcuffs are gold-plated copper. Copper is a more expensive material than zinc alloy. Belle's rose branch necklace from the same scene is sold separately.
Instructions to adjust and wear Belle's earcuffs can be seen in the link below:
http://www.bijouxdelou.com/how-to/howto-adjust-earcuffs 
