I have visited this shop on a number of occasions and always make it a must-visit during any stop in Tokyo.
Inside you'll find high quality and unique Japanese jewellery. It's a small shop but has such a wonderful collection of quirky designs that you could spend hours looking through it all and trying things on. The staff are absolutely lovely and have warmly welcomed me on every occasion I've been in to visit.
If you are looking for a unique piece to take home from Tokyo then you'll find it here.