Yes, you can take it home on the same day. If you wish to have the stones on the surface or the birthstone inside the ring, our craftsmen will work on it after the ring is made, so it will take about 1 to 2 hours, but it will be finished on the same day.
*If you wish to have special processing not included in the course, such as multiple stones or laser marking, it will take more time and we may mail it to you at a later date.
Be assured our artisans will assist you with the difficult parts. For the hand engraving process, our artisans will explain and let you practise before the actual engraving. We will support you throughout your handmade jewelry workshop.
We also offer a course in which our craftsmen can make rings on your behalf.
Yes, you may.
Please let us know ahead of time, and we will assess the possibility of fulfilling your request.
Yes, we offer professionally made custom bridal rings. For more details, please take a look at this page.
We regret to inform you that we are unable to fulfill these requests at MITUBACI.
Yes, please feel free to take photos and videos at our atelier even with your wedding photographer. Our artisans are also most pleased to take commemorative photographs with you.
Yes, this is available as an option. Please see the options section of each course for additional fees.
If you would like to see a sample of the actual product, please ask us on the day of your visit.
For more information on lettering and engraving, please see this article.
Yes, hand and machine engraving of the text is included in the price of the ring, so there is no additional charge. This is a very popular process, as customers can engrave the ring themselves. We encourage you to try engraving the ring yourself.
Yes. You can take your purchase home the same day even with laser engraving.
We have introduced laser engraving machines in-house. Furthermore, all craftsmen at MITUBACI TOKYO are trained professionals, so we can handle your request on the spot.
※Currently, same-day laser engraving service is available only at our Flagship Store in Tokyo.
Yes. We can create digital data from the illustration you draw on paper on the spot and engrave it onto the ring. ※This is a paid option.
Yes. We will engrave the image data you brought onto the ring. If the image is too detailed, it may become invisible or not fit properly, so please contact us in advance by email or other means. ※This is a paid option.
Yes. You can add engraving to the ring later. If you choose to add it, please select either machine engraving or laser engraving. If the ring already has engraving or a birthstone, there will be a limitation on the number of characters.
Yes, it is possible to remove the engraving on the ring. The cost and delivery time will vary depending on the number of characters and the type of engraving. Please contact us for consultation if you are interested.
Yes. You can take it home on the same day even if you include a secret stone. If you wish to have five or more gemstones, please consult with us.
Yes. Please have the photographer take plenty of wonderful photos for you. If you let us know in advance, we can smoothly prepare chairs and make other arrangements.
No, you don't need to bring anything in particular. We also provide aprons here.
The workshop lasts 2 to 3 hours. If you have options such as engraving or stone setting, we allocate approximately 1 hour, and if there is diamond setting for an engagement ring, we allocate approximately 2 hours. Optional work will be handled by our craftsmen. During your wait time, please feel free to enjoy lunch, cafes, shopping, and other activities in the surrounding area of our shop. If you have a fixed departure time, such as a flight, please let us know in advance.
Diamonds of 0.2 carats or more come with a certificate from the Central Gem Laboratory. Diamonds of 0.1 carats or less do not come with a certificate, but we will provide a sorting report (simplified certificate).
We have staff members who can assist you in English (or we will guide you using translation devices). We will help you create a wonderful ring, overcoming any language barriers.
There's absolutely no problem at all. Whether it's changing the shape while keeping the material the same, or keeping the shape the same while changing the color, the greatest happiness is choosing something that both of you will want to wear every day.
Yes, we absolutely welcome that. Some customers create them as surprises for their partners, while others create them for themselves.
Yes, we also accept orders for just one ring. We have customers who choose to have just one ring made for various reasons, such as work circumstances or allergies that prevent them from wearing rings, or those who have lost theirs. Please feel free to consult with us.
Enjoy free ring cleaning and polishing services for the jewelry you crafted at MITUBACI!
We offer an initial resizing service for free.
2nd-time resizing onwards is chargeable at ¥5,500 per resizing.
Please note that ring resizing may take several working days.
Diamonds have a property called "lipophilicity," meaning they are easily moistened by and adhere to oils. When a film of sebum or cosmetic oils builds up on the diamond, it will not appear to shine as brightly. Please wash it with your neutral detergent and lukewarm water, and rinse thoroughly. The brilliance you had when you first purchased it will return. We also offer professional cleaning services at our store.
Yes. We offer ring resizing for rings purchased at MITUBACI. The first resizing is free of charge. From the second time onwards, a fee will apply, but please feel free to contact us.
Yes. We also offer size adjustments by mail. Please contact us if you are interested.
With daily use, the surface may be rubbed and gradually develop a subtle shine. You can restore it to its original condition by having a matte finish applied again. We offer this service free of charge. Some customers enjoy the process of the matte finish gradually becoming glossy over time.
Scratches that form in daily life are proof of the time you have spent walking together. If you are concerned about them, you can restore the shine to look like new by having them polished. We offer free polishing service at any time, so please feel free to contact us.
You don't need to worry even if you don't have a warranty certificate. As long as we have your reservation name or email address, we can look up your purchase history, so please rest assured.
If you provide us with the name and email address used at the time of creation, we can provide you with an estimate for a ring with the same design as the one you had made.
Yes, we offer a special case for those who order engagement and wedding rings.
We offer an original pouch to those who have silver jewelry and K18 skinny rings made. Wrapping in a case (¥1,100, ¥2,200) is also available upon request.
An engagement ring is a commemorative ring given by a man to a woman as proof of a "promise to marry." A wedding ring is a ring that a married couple wears daily as proof of "being married."
In Japan, it is common to wear a wedding ring on the ring finger of the left hand. In some regions, such as the Netherlands, there is a custom of wearing it on the right hand.
In Japan, it is common to wear an engagement ring on the ring finger of the left hand. In some parts of the world, the engagement ring is worn on the right hand during the engagement period and then moved to the left hand after marriage.
The main reason lies in a legend passed down from ancient Egypt and ancient Rome that states "the ring finger of the left hand is connected to the heart (mind) by a single blood vessel."
It is a diamond created in a lab (factory) with the exact same chemical composition and crystal structure as natural diamonds
MITUBACI does not handle lab-grown diamonds. All diamonds used at MITUBACI are natural diamonds.
For rings given at special milestones in life such as engagement rings and commemorative gifts, we use only unique natural diamonds.
It is a unit that expresses the "weight" of a diamond. 1 carat is 0.2g. The heavier it is, the larger the stone becomes, and its rarity value increases.
The four letters represent the first letters of the four international standards for evaluating diamond quality: Carat (weight), Color, Clarity (transparency), and Cut (brilliance). The value of a diamond is determined by the balance of these four factors.
This refers to the "clarity" of a diamond. In the case of natural diamonds, diamonds contain inclusions (foreign substances different from diamond) inside them. The fewer inclusions there are, the more beautifully the diamond shines without blocking light.
It refers to the shape of the stone and the precision of its finish. Cut is the only element of the 4Cs that involves human craftsmanship, and the quality of the cut determines the "brilliance and sparkle" of the diamond.
This refers to the color of the stone. The closer it is to colorless and transparent, the higher its rarity value. As the yellow tint becomes stronger, the grade decreases. Stones are classified by alphabet, with D color being the highest grade.
Engagement rings do not have to be made with diamonds. At MITUBACI, we offer blue sapphires and rubies. For engagement rings made with other gemstones, please contact our sister store, Fujimori Tokyo.
While there are no set rules, by giving form to a once-in-a-lifetime commitment, you can provide your partner with a sense of security and create a precious asset that can be passed down to your children in the future. If you are unsure, please consult with your partner, close family members, or our MITUBACI staff.
While not absolutely necessary, those who prepare three rings typically have one engagement ring given by the groom to the bride before marriage, and one wedding ring each to be worn after marriage with their partner, for a total of three rings. Recently, there are various approaches: some choose one glamorous wedding ring that also serves as an engagement ring, others coordinate all three as an easy-to-wear "set ring" for daily use, and some same-sex couples purchase engagement rings for both partners, preparing a total of four rings.
For those who don't usually wear rings, we recommend a thin ring. A lighter ring will feel less uncomfortable to wear. Additionally, at MITUBACI, we also recommend a design called "Oval" that uses a lathe. Since it is processed into a rounded shape, it has less contact area with the finger and feels very smooth when worn.
It is the process of coating a thin layer of another metal on the surface of a metal. This is done to enhance shine or adjust the color tone. At MITUBACI, we can apply yellow gold plating, pink gold plating, and rhodium plating to silver jewelry.
Basically, the color of K18 gold does not change. In the unlikely event that it becomes discolored due to contact with chemicals or similar substances, you can rest assured that the original color can be restored by polishing the surface.
In terms of hardness (resistance to scratching), K18 gold tends to be slightly harder, but platinum has a tenacious quality and is less prone to breaking. Both possess the durability to last a lifetime.
We do not recommend using the product during strenuous activities involving strong force (such as weight training) as there is a risk of deformation.
Yes, basically there are no issues. Platinum and K18 gold are extremely stable precious metals that are unlikely to change quality even when exposed to water. In the unlikely event that they become discolored due to strong hot spring components or chemicals, they will return to their original state when polished. Please feel free to consult with us.
Pools and the ocean are fine, but please refrain from hot springs.
Hot Springs (Please Remove): Silver reacts with sulfur components contained in hot spring water and turns completely black in an instant (sulfidation). You must always remove it before bathing. If possible, in places where hot spring components are present, it's better not to use it and to keep it in a plastic bag to minimize exposure to the air.
Pools and Ocean (Fine as is): Getting wet in water itself is not a problem, but if left unattended, it can cause "dullness." After getting out, rinse away salt and chlorine with fresh water and thoroughly wipe away moisture with a soft cloth.
The level of discoloration varies depending on the material, but even if discoloration occurs, you can rest assured that it will return to its original shine with "re-polishing".
The characteristics and care methods for each material are as follows.
1. Platinum・K18 Gold
【Ease of discoloration: Virtually none】
Discoloration in daily life is virtually non-existent. It is an extremely stable metal.
If discoloration occurs: In extremely rare cases, the surface may become slightly cloudy or discolored due to strong chemicals or hot springs with special mineral components.
How to handle: In this case as well, simply polishing the surface very lightly will restore its original beautiful shine. The discoloration is only on the surface and the color has not changed inside the material, so please bring it to our store without worry.
2. Silver
【Ease of discoloration: Prone to discoloration (sulfidation)】
Silver has the property of reacting with components in the air and sulfur components in hot springs, causing it to become blackened or brown.
If discoloration occurs: Even if the silver turns completely black in an instant when you enter a hot spring, it is only the surface that is reacting.
How to handle at home: For light blackening, gently rub with a small amount of water and "baking soda" or wipe with a dedicated silver cloth to make it shine again.
How to handle at our store: For stubborn discoloration or blackening in fine details, simply bring it to our store and we will clean it and re-polish it to make it beautiful again immediately.
Both indicate that the gold purity is 75%. At MITUBACI, it is marked as "18K (or K18)", and the hallmark indicating the fineness (gold certificate) uses "K18".
・Notation of 18K/K18
K stands for carat and indicates that 18 out of 24 parts is gold. This is a common notation in Japan and Asia. In Japan, it is often written as K18, while in Europe and America, 18K is the standard notation. MITUBACI's website also uses 18K to align with international standards, but both indicate the same purity and there is no difference in gold content, so please rest assured.
・Notation of 750
It indicates that 750 out of 1000 parts is gold. This is a common notation in Europe and other regions.
By mixing metals other than gold, strength can be achieved. Additionally, the color varies depending on the type of metal mixed. For example, pink gold contains a small amount of copper.
Yes, please make a reservation as usual, and then use the Contact Us form to let us know the date of your reservation and what you would like to do and the options you would like. We will send you a payment link that allows you to pay by credit card. Please note that if you wish to pay in advance, we will not be able to provide tax exemption.
Yes, we offer a tax-free service if you are a visitor with temporary stay status. Please bring your passport with you.
From purchases made on or after November 1, 2026, the tax-free system will change to the "Refund Method." Please see the links below for details.
Online orders can be settled directly on the site. For custom orders or orders placed after consultation, we will send you a payment link via email separately, and you can pay by credit card.
Estimated Pricing function gives you an idea of the price of the rings.
We regret to inform you that we do not have a parking lot. You may wish to consider using parking lots nearby.
Cancellation of orders and returns after delivery for the customer's convenience are generally not accepted.
However, we will do everything possible to accommodate our customers' circumstances, so please do not hesitate to contact us.
We apologize, but we only offer sizing adjustments for MITUBACI products. For sizing adjustments on products from other manufacturers, please contact our sister store, Fujimori Tokyo.
You are welcome to visit us for a viewing only. We have many samples available, so you can see them in person and take your time to consult with us before making a decision.
It's fine if we don't make it on your reserved date. Please just let us know at the time of reservation that you'd like to do a viewing only.
We have a ring gauge available at our store to measure your ring size. We also have a sizing rod to measure ring sizes. Please visit us with confidence.
We do not have products exclusively for baby rings, but at MITUBACI, you can order rings starting from size 1 and in quantities of 1. Since we can engrave birthstones and names, you can use them as baby rings.
While we do not provide a printed certificate on paper, we will engrave the material fineness used inside the ring (Pt950/K18/SILVER). Additionally, products made of platinum and K18 gold come with our guarantee certificate. MITUBACI guarantees the authenticity of the product with full responsibility.
At MITUBACI, we keep a record of your purchases linked to your email address. Please provide us with the name and email address you used when making your reservation so that we can look up your information.
MITUBACI currently has physical stores in Sangenjaya, Tokyo and Kyoto as of September 2026. For customers living far away, we also accept online orders, so please feel free to use that service.
All diamonds handled by MITUBACI are natural stones that comply with the Kimberley Process and are conflict-free, ensuring safety and peace of mind. Additionally, they are certified by the Central Gem Laboratory, Japan's largest appraisal institution, and their quality is strictly evaluated according to world standards.
If you wish to have two different types of anniversary jewelry made at the same time (i.e. a silver ring and a silver bangle), please choose either course and indicate this in the Special Requests when making your reservation.
Yes! Our artisans will guide you through the entire workshop process.
Yes, please let us know the number of participants ahead of time.
For the handmade ring course, we may need more time after the ring is made if there are additional items such as stone clasps, etc. We would appreciate it if you could rearrange the schedule to a date that gives you more time to complete the course.
Please note that some limited courses during peak season such as Christmas cannot be rescheduled.
If you do not show up without prior notice, you may be charged the basic course fee.
Yes, you can attend our workshops alone to make a single ring to commemorate a special occasion. Rest assured that our artisans will assist you throughout the workshop. You can also visit with your partner and both of you can work together to create a single anniversary ring. In other cases, you make also make more than one piece of jewelry by yourself.
We accept reservations from 90 days before your visit. Since Saturdays, Sundays, and holidays tend to fill up quickly, we recommend making your reservation as early as possible.
Please check your spam folder, or contact us by phone or official LINE. We will confirm your name and resend your reservation status.
Even if you have lost the confirmation email, there is no problem as long as there are no changes to your reservation date and time. If you would like us to resend the email, please provide us with the name and email address associated with your reservation.
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