Yes! All gold and platinum that are used in kataoka creations are recycled from the advanced Japanese semiconductor industry at a purity of 99.9%. Once acquired, the design process begins with developing custom-blended 18k gold and platinum 900 options that are both romantically antique and excitingly modern. Client happiness and satisfaction are at the forefront of the kataoka experience, and as such, we do not use any allergy-causing metals such as nickel in our custom-blends. We ask that you, please contact us if an allergy is suspected before placing your order.
Where do you source your precious gems?
All of our precious gems are conflict-free and supplied by our long-term trusted partners. Each gemstone is unique, and they all vary slightly in size and color. Please let us know if you have any special requests regarding the color of the stone. While we cannot guarantee an exact replica of the gemstones shown online, we will do our best to source a gemstone that will make you cherish your kataoka treasure forever!
Where are kataoka creations made?
kataoka jewelry pieces are all handcrafted in our workshop in Tokyo, Japan.
What is your lead time?
Every piece is handmade to order, and it will take between 3 and 5 weeks to complete it from when your order was confirmed. For rush orders, please contact us and we’ll do our very best to oblige!
What quality are kataoka diamonds?
All the diamonds we use for our standard designs are F color, Clarity SI1, very good cut and polish minimum. If you wish to have higher quality diamonds set on your kataoka treasure, please contact us.
Do you provide a warranty?
We stand behind everything we make, that is why we offer a Lifetime Limited Warranty on all of our creations.
This warranty applies only to the original purchaser and is non-transferable. This warranty is against breakage or malfunction under normal use due to defects in material or craftsmanship quality. We will repair, or, at our option, replace any defective items with the same or a comparable model.
This warranty does not cover damage as a result of abuse, misuse, loss or theft of your kataoka jewel(s).
kataoka jewelry does not endorse or approve any third-party alterations or treatments to your kataoka jewel(s). Accordingly, any third-party modifications or treatments void that kataoka Lifetime Limited Warranty. If you purchased your kataoka jewel(s) from one of our select retailers, please contact them directly. If you have any repair issues that are not covered under warranty, or would like to know if your repair is covered, please contact us.
Can you use lab-grown diamonds in your creations?
Yoshinobu is not just a jewelry maker but an artist who is very devoted to his process and love of what he does. His ethos is to work with gems and materials that speak to him, which we are sure you can understand considering how strong your connection to your preferred stones can be.
For him, and for us as a luxury house, using only naturally occurring untreated and conflict-free stones is very near and dear to our hearts. This is in no way shape or form a slight or turned up nose to lab-grown diamonds; the result would be the same if someone asked him to work with another gem that we didn’t have a connection to. In this way, we maintain our love for creating jewelry and keep it unique to us..
Why do your creations command such a high price point?
What you are investing in when you purchase a kataoka jewel is the value of high quality, ethically sourced gemstones; the recycled and custom-blended metals; the kataoka lifetime warranty that covers your jewelry; and the unique designs and aesthetic of master jeweler Yoshinobu Kataoka, who applies decades of expertise in centuries-old techniques to innovate and create works of art worthy of passing to the next generation.
What can I do if I ordered the wrong ring size?
We know that ring sizing is tricky, and that's why we provide one resizing, completely free-of-charge, within one year of purchase on all orders placed directly on our website. For orders placed through one of our authorized retailers, there will be a small fee of $100 per resizing.
Please note that you'll be responsible for the shipping fees to and from Japan. However, if you're based in the US, you can ship your ring to our New York Flagship store, and we will forward it to Japan, and bring it back to NYC for you. You'd just be responsible for the shipping fees within the US.
What gemstones are the best for engagement rings?
Gemstone hardness, based on the Mohs scale, contributes significantly to the degree to which a gem will show wear. This is often referred to as wearability or sometimes “durability.”
Quartz which has a hardness of 7 is a component of dust and one of the most common minerals on Earth. Simply wiping off the dust from a softer material (i.e., hardness below 7 on the Mohs scale) will scratch it.
Diamonds with a hardness of 10, rubies and sapphires with a hardness of 9, or emeralds with a hardness of 8 will remain bright and lustrous for years because they are harder than most of the abrasive particles that contribute to wear, making them excellent choices for engagement rings.
On the other hand, an opal with a hardness of 6 or a pearl with a hardness of 4 will be rapidly covered with fine scratches and lose their polish if worn every day as a ring stone. The scratches may be tiny, even microscopic, but they’ll accumulate and become visible over time, they are definitely more delicate, so we don’t recommend them for an engagement ring that you plan to wear every day.
Do you provide appraisals?
We can provide an invoice that documents your investment for your kataoka jewel(s) with all the specifics, for insurance purposes. Please note that an appraisal can only come from a third-party, certified appraiser to avoid any conflicts of interest.
I have an heirloom diamond, can you set it on one of your designs?
We only use our own ethically sourced premium diamonds in all kataoka creations. If you own an heirloom stone, we will be happy to create a custom design just for you! Please contact us.
Can I purchase a ring without the center stone?
No, we do not sell any of our creations incomplete. We exclusively use ethically sourced white premium diamonds and natural gemstones. Besides, our gold and platinum being custom-blended and unique to kataoka, third-party jewelry workshops wouldn't be able to set your stone without ruining the setting; they do not have access to our exclusive custom-blended metals.
Payments, Shipping, and Returns
Do you take credit cards?
Yes. We accept Visa, Mastercard, Discover, JCB, American Express. They are processed on PayPal secure servers and no credit card information are store in our system. Please note that you don't need to have a PayPal account to proceed with your investment.
Do you offer financing options?
As of now, we do not provide any financing options. However, please reach out to us with your inquiry and we will do our best to help you find a solution for your investment in your future kataoka treasures.
Where do your jewelry ship from?
All our jewelry ship from our atelier in Tokyo, Japan.
What countries do you ship to?
kataoka jewelry can be delivered worldwide with the assistance of FedEx; we ship International Priority Expedited, and packages are usually delivered within 2 business days. An adult signature will be required.
If you want to know whether we ship to your country, please contact us.
Can I track my international order?
After we ship your order, we will send you a tracking number by email. You can also see your order status and delivery tracking details under “My Account” after you log in.
Are there any additional costs that will be due upon receipt of my order?
Duties are never fun, and It is customary that luxury items are due to customs duties upon entering the delivery country. For some countries and territories, the customs duties are reasonable – 6.5% for the US, 0% for Hong Kong, while they are more important for others. Please inquire with your country customs agencies to have the most accurate rates.
How do I cancel or change an order?
After you place your order, we will start handcrafting your item(s) promptly. If you wish to cancel or change your order, please contact us immediately. Please note that once we start production, no cancellations or modifications can be accepted.
What is your returns policy?
Every kataoka piece is handmade to order, all sales are final and no returns can be accepted whatsoever.
Do you have sales?
Our creations are handcrafted and produced in very limited quantities; We do not overprice anything with the intention of putting it on sale during the holidays. Therefore, we never offer any discount sales.
What you get is a fair and even pricing, considered the quality of the materials we use and the level of craftsmanship. What you don't get is jacked-up prices, with misleading sales every once in a while.
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Do I need an appointment visit your Flagship Stores?
No, you don't need an appointment to visit our Tokyo or New York Flagship Stores. We embrace walk-ins all the time, and we serve an exquisite tea to our guests, regardless of whether they are purchasing or just casually browsing!
You can read them here. Please feel free to reach out shall you have any questions.
How do I apply to become a kataoka jewelry authorized retailer?