Onyx Bracelet

Exploration Stage: Hall of Weddings
From: Martha
Description: What a strange choice, look at the bracelet on the Lady in Black’s hand. It’s black onyx, a magical jewel that is used in many black magic rituals. Even I would be wary of wearing that. Where could it be?
Completed: The stone on this bracelet is completely black, you see! It’s as if light itself is avoiding it, it’s not even reflecting from the surface! And it has a letter M on the inside, the same letter that’s on the sorcerer’s signature.