Handcraft a ring starring diamonds, rubies, or sapphires, and add a vibrant touch to your everyday style. Mix and match colors that reflect your personality to create a fashionable, one-of-a-kind piece that complements any look. Your finished ring, with the stone setting, can be taken home the same day! Offered exclusively by MITUBACI TOKYO, this experience is made possible by our in-house workshop and team of skilled artisans.
Shaping, engraving, welding, and surface finishing are all done by you under the guidance of a skilled craftsman. The more advanced processes—such as preparing the stone seat and setting the stone—are handled by our experienced artisans, and the finished ring is ready for you to take home on the same day. We hope you'll enjoy the experience of choosing your precious metal and gemstone, crafting the ring with your hands, and witnessing the refined techniques that Japanese craftsmanship is known for.
The course price includes all costs to complete the ring.
You can also add options as you like for further originality.
Diameter ±3.0mm
A 0.1-carat diamond is an affordable option that makes beautiful, simple, and subtle ring. Despite being on the petite end, its color, clarity, and cut are selected carefully to meet the standards of other diamonds we offer.
Diameter 3.8mm
A 0.2-carat diamond sufficiently brings out the brilliance of the ring. It acts as an accent to special occasions such as dinners, parties and holidays, and is befitting for everyday wear.
Diameter 4.3mm
A 0.3-carat diamond, slightly larger and with a broader head, leaves an augmented impression on the finger.
Diameter 5.0mm
A 0.5-carat diamond ring is a luxurious choice. This diamond size is a showstopper that fills one with envy.
Diameter 5.8mm
The 0.7ct diamond is breathtaking. Generally, this size is used for high-end engagement rings such as bespoke rings, but at MITUBACI TOKYO, you can also choose it for the engagement ring making class. Check out its brilliance with your own eyes.
Diameter 6.5mm
A 1.0 carat diamond is the size of the ultimate in luxury and elegance. When it shines its dazzling light on a ring of your own making, it will become a lifelong symbol of your special story together.
Diameter 3.8mm
Ruby is another classic choice for the center stone of an engagement ring. Besides being the birthstone of July, this stone symbolizes lifelong happiness. It is also a gorgeous gem suitable for formal occasions.
Equivalent to a 0.2ct diamond in size.
Diameter 3.8mm
Sapphire is another classic choice for the center stone of an engagement ring. It is also a favorite gemstone of the British Royal Family. The beautiful blue gemstone is said to represent love and brings wisdom to the wearer.
Equivalent to a 0.2ct diamond in size.
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Temporary visitors may enjoy tax-free shopping (10%) with us by presenting your original passport on the day of purchase.
Sometimes our personal effects are more than just a stylish wearable piece, sometimes they boost our confidence and become part of our identity.
A classic design that augments the full brilliance of the stone, making it a truly cherished gift for anniversaries or special occasions; a romantic and heartfelt handmade present waiting to reveal itself from the jewelry box.
You can also pair the diamond or color gemstone ring from this course with a standard platinum or gold ring to create a matching set. Craft your rings together and create a memorable experience with this pair of lifelong keepsakes.
Exquisite diamond and colored gemstone rings also make the perfect gift for yourself as a milestone memento.
Diamonds are evaluated using an international standard known as the 4Cs: Carat, Color, Clarity, and Cut—each representing a key aspect of the diamond’s quality.
MITUBACI TOKYO uses natural diamonds of the same high grade as those found in custom-made jewelry. For diamonds ranging from 0.1ct to 0.3ct, we provide stones that are F color or higher, SI-1 clarity or higher, and Triple Excellent cut or better.
For diamonds 0.5ct and above, you can choose the grade based on your budget. A certificate of authenticity is included as proof of quality.
A carat is a unit of weight of a diamond; one carat is 0.2 grams.
Diamonds are classified between D (colorless) and Z (light yellow); MITUBACI TOKYO offers diamonds with F color or higher, which is classified as "colorless".
Clarity is an evaluation of a diamond's transparency. It is broadly divided into six categories. In descending order of evaluation, they are FL, IF, VVS, VS, SI, and I. They are further divided within each category, comprising a total of 11 grades.
The GIA Diamond Clarity Scale has six categories, some of which are subdivided, totaling to 11 grades.
MITUBACI TOKYO offers diamonds that are SI-1 (inclusions can be seen under 10x magnification) or higher.
Cut is an evaluation of a diamond's balance, symmetry, and polish. While color and clarity are the innate properties of a diamond, cut is an evaluation of the workmanship. The cut is divided into five grades: Excellent, the highest grade available at MITUBACI TOKYO, and Triple Excellent, the highest grade for overall evaluation, symmetry, and polish.
* Applicable to 1.7mm-3.5mm
* Tokyo store only
* Applicable to 1.7mm-3.5mm
* Tokyo store only
In addition to the standard plain finish, you can choose for free the popular hammer finish that brings out the craft aesthetic.
By using a lathe machine, craftsmen shape the ring into a uniform, beautiful, and luxurious-looking ring that evokes a custom-made ring.
* Compatible with ring widths up to 3.5mm. For widths larger than that, please contact us in advance.
You can add textures not only to the surface of your ring, but also to the sides! Side textures add extra detail and charm to your jewelry, allowing you to appreciate your craftsmanship from every angle. (Side textures are complimentary.)
Just like other workshop menu at MITUBACI TOKYO, customers may engrave their names and initials, special dates, or even messages at no additional cost. You can choose between hand engraving by yourself with metal stamps for an enhanced handmade vibe and hand engraving with engraving machine done by our artisans for a neater result.
Alternatively, you may opt for laser engraving to include Japanese, Chinese, emojis, or handwritten characters on your jewelry (additional charges will incur).
Total
¥ 0 tax incl.
We want to introduce Mr. and Mrs. K, who created a pair of matching 18k rose gold couple rings: a 0.2ct diamond ring and a ring with an emerald to commemorate a special anniversary.
For customers considering handcrafting a ring at MITUBACI TOKYO, we offer a free ring gauge rental to help you accurately determine the correct ring size. If you’re planning a surprise gift but aren’t sure about the size, this service is perfect for you. And even if the ring doesn’t fit perfectly after it's made, we offer free resizing!
MITUBACI offers a lifetime warranty to ensure you can enjoy your jewelry with lasting peace of mind. Whether handmade or custom-made, each piece is cared for by our skilled artisans. Our after-sales services include resizing, cleaning, and polishing—keeping your jewelry beautiful for years to come.
Our after-sales service includes not only cleaning but also retouching the texture to restore your jewelry’s original beauty. Regular maintenance helps keep your piece shining—feel free to book an appointment anytime to enjoy this service!
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).
We offer premium diamonds of grade F or more colorless, clarity of SI-1 or better, and triple excellent cut or higher.
Rings made with us can always be cleaned free of charge. First time resizing is also free. The second and subsequent resizing will be chargeable for a basic fee of 5,500 yen per ring.
Yes, you can take it home on the same day. Please note that there is a 1.5 to 2 hour waiting time for add-on options such as stone setting and laser engraving.
Yes, the ring will be delivered with a box.
Yes, it is possible. We can also make a set of rings without diamonds or colored stones and use them as a pair ring. Of course, you can take both rings home with you on the same day.
Although the courses are separated for various occasions, the rings will be of the same design and quality as the engagement ring course. You can rest assured that while the rings are fashionable, they will be fine jewelry of the high quality that only an engagement ring grade can provide.
Tokyo (Sangenjaya)
Tokyu Den-en-toshi line (DT) / Setagaya line (SG)
1-minute walk from Sangenjaya Station
Add deeper meaning to your jewelry with a secret gemstone set on the inner wall of your ring.
+¥11,000
* Diamond・Ruby・
Sapphire・Emerald are
+¥16,500
 January — Garnet |  February — Amethyst |
 March — Aquamarine |  April — Diamond * |
 May — Emerald * |  June — Moonstone |
 July — Ruby * |  August — Peridot |
 September — Sapphire * |  October — Tourmaline |
 November — Citrine |  December — Tanzanite |
Gemstone setting takes around 1~1.5 hours after basic ring completion. If you are pressed for time after the workshop, please let us know and we will schedule for delivery at a later date.
The 4-point setting is MITUBACI’s standard gemstone setting. This classic style complements a wide range of ring designs.
Resembling a flower, this decorative style beautifully enhances the shine of both the gemstone and the metal.
*Not compatible with Senban finishes. Applicable to ring widths of 2.0mm and above.
* Not available for the secret gemstones (inner stones)
+¥5,500
+¥5,500
Choose your preferred font from our selection and engrave dates, names, and more. In addition to numbers and alphabets, we also support Kanji characters and our in-house engraving illustrations.
¥11,000
Handwritten messages and hand-drawn illustrations can also be laser-engraved! Please prepare your artwork in advance and send us a scanned copy prior to your visit, or create it in-store upon arrival. Kindly note that data provided on the day may require additional processing time.
+¥11,000
Design your pixel art in a 16 x 16 grid and have it engraved on your jewelry. Please submit your design at least 7 days before your visit.
For more information, please visit the Pixel Art Engraving blog.
*Available for rings of at least 3.0mm.
