Hermione was bemused by the formal tone of the letter but when she reached to open the box, she felt the tingle of wards responding to her magical signature. Perhaps the letter had been written obliquely in case a friend or someone else happened to come across it. That was... quite considerate of him, actually. With a smile, she lifted off the lid and gasped at the beautiful leather collar that lay inside. It was black and soft to the touch, with an intricate silver filigree overlaying it in strands so thin as to be flexible, bending easily with the leather. As she ran her fingertip along the surface, she could feel the soft thrum of energy. It was clearly imbued with magic, though not remotely menacing. It felt... grounding. With some surprise, she realised that it reminded her of him. His magic; his presence. It was reassuringly calming.