K18 Champagne Gold Signet Jewelry Making Class

Create your own original jewelry with our new Signet Jewelry Workshop! Signets (seals) are traditional items that express individuality and identity. Give shape to your ideas in a variety of forms, from rings to pendants and earrings. Make your contemporary signet jewelry today!

What is Signet?

The origin of signets dates back to ancient times. Originally used as seals, they were items used by royalty and nobility to indicate their authority and status. Signets were engraved with the owner's coat of arms, initials, or family crest, and were used to seal letters and other documents.

This traditional element has been incorporated into modern jewelry design, and has developed into more than just an ornament but also a means of expressing personal identity and story. Today, they come in various forms, ranging from rings to pendants and earrings, each with a special meaning tailored to its owner. To date, signets continue to hold appeal and accentuates personal style.

Signet Workshop Menu


Signet Rings

¥36,300  before tax ¥33,000

Our champagne gold signet ring is an ornamented version of our stackable layered ring. This original modern interpretation allows room for customization and makes everyday styling effortless.
For more information on ring designs, please visit our K18 Layered Rings page here.


Signet Earrings

¥36,300  before tax ¥33,000

Signet earrings are the staple everyday jewelry. Simple, minimal, and unique, these are great as gifts as well (and you wouldn’t have to worry about the sizes like rings!) Pamper yourself with something gold, or customize a valuable gift for your loved ones.

Consists of one set of ear studs (left and right).


Signet Pendants

¥36,300  before tax ¥33,000

The first gold pendant at MITUBACI TOKYO! Personalize your pendant with meaningful engravings, initials, or even your lucky number! This minimal jewelry is elegant on its own and also adds to your personality when worn as a stackable necklace!

Chain length: 40 cm

How to make a signet

First, 18k gold is heated with a burner into the shape of a ball. This gold ball is then flattened with a hammer to create an amorphous round signet plate unique to your jewelry.

Free engraving

As with other courses at MITUBACI TOKYO, you can also experience hand-engraving on your signet jewelry! Get hands on with our metal stamps and personalize your signet jewelry with initials, lucky numbers, or our in-house engraving stamps etc. for free! Before working on your actual jewelry, our craftsman will demonstrate how to use the metal stamps and prepare materials for you to practise!


You can also add your choice of gemstone(s) to your signet jewelry!


*Diamonds, ruby, sapphire, and emerald +¥16,500.

January — GarnetFebruary — Amethyst
March — AquamarineApril — Diamond *
May — Emerald *June — Moonstone
July — Ruby *August — Peridot
September — Sapphire *October — Tourmaline
November — CitrineDecember — Tanzanite

Stone setting takes additional 1~1.5 hours after you complete making your jewelry. If you have a tight schedule, please inform our staff and we can arrange for delivery of your items at a later date.



Yes! Our artisans will guide you through the entire workshop process.

Yes. However, please note that services such as gemstone setting will require around an hour of waiting.

Yes, it is possible. We have had customers who made 2 pieces of jewelry in one workshop session.

Yes, we accept VISA, Mastercard, JCB, Amex, Diners, and Discover. Please let us know your preferred payment method when you visit.


MITUBACI's interior is designed to create an environment that allows all visitors to feel relaxed and to be able to engage in casual conversations with our artisans during the workshops. Our craftsmen who are skilled at making custom-made jewelry will guide you through creating the jewelry you have in mind.


MITUBACI TOKYO is 1 minute on foot from Sangenjaya station.
Before visiting us, please find the easiest route for you!

Tokyu Den-en-toshi line (DT) / Setagaya line (SG)
1-minute walk from Sangenjaya Station

Tokyo, Setagaya City, Sangenjaya
2 Chome−14−10 #407

Open hours 9:00am - 6:00pm
  • 4 minutes from Shibuya
  • 10 minutes from Harajuku and Omotesando
  • 20 minutes from Ginza and Roppongi area


Make your reservation online today