Lifetime warranty and after-sales service

MITUBACI TOKYO offers a lifetime warranty service that provides maintenance without a time limit so that rings and accessories can be used with peace of mind for a lifetime. MITUBACI TOKYO is proud to have its own workshop and skilled craftsmen. Taking advantage of this, even if the accessory is handmade, we will take care of it with the same level of after-sales support as if it were custom-made. We offer a variety of maintenance programs to ensure that your rings and accessories remain beautiful and in perfect condition for the wearer for many years to come.

Cleaning and refinishing

Free of charge (visit atelier in person)

Our after-sales service covers not only cleaning but also touching up your textures so that they look as good as new. Regular maintenance will enhance the brilliance of your jewelry, so please feel free to make an appointment with us to enjoy these services!

Ring Size Adjustment

1st-time Free of Charge
2nd-time onwards from ¥5,500

At MITUBACI, based on the concept of "rings you can love for a lifetime," we make it possible to resize all of our designs so that rings are not too loose or no longer fit and can no longer be worn. In MITUBACI's workshop, which has been in business for 50 years, we often take in maintenance work on rings made 20 or 30 years ago.

The first ring resizing is free of charge! Subsequently, it will be chargeable from ¥5,500 onwards per ring (depending on the condition of your ring).

Cleaning set

¥1,980(Tax Incl.)

In response to requests from customers who want to keep their handmade jewelry beautiful without having to visit a workshop, we have prepared an original cleaning set that can be used at home. The contents are the same as those actually used by our craftsmen, so you can use them with peace of mind.

  • jewelry cloth
  • brush
  • sodium bicarbonate
  • vinyl for storage
  • (printed) instructions


¥3,300(Tax Incl.)

If gold plating is applied to silver jewelry, it will gradually fade as it is used, and may fall off after further use. When the plating falls off, the color of the base silver becomes visible, but upon request, we can re-plate the jewelry.

Request after-sales service

For all types of maintenance requests, please make an appointment using the link below and visit our workshop in Sangenjaya.


Please note that MITUBACI does not accept cancellations or returns due to customer reasons since orders are made to order. If you are concerned about the quality of your order, you may make an appointment to visit our workshop and see our products before actually having your order made. If you wish to do so, please let us know when you make your reservation.

To ensure the best possible results, we recommend that you visit us in person. However, if you are too far away to visit us, we can mail your order to you.

  • Please allow 3 weeks for delivery.
  • This service is available only in Japan.
  • For resizing, we will lend you a ring gauge ahead of time (free of charge).
  • You are responsible for shipping costs when you mail your jewelry to our store.
  • Please send by a method with tracking and compensation service for precious metals.

For repair requests by mail, please contact us using the contact form.