Contact Us

Whether you have a question, need assistance,
or wish to explore our creations further,
we invite you to connect with us through the form below.

*Required

By sending your message, you agree to accept the Terms of Use of the Site and that your data will be processed in compliance with the Privacy Policy of kataoka.

Frequently Asked Questions

Frequently Asked Questions

About Our Creations

Do you provide a warranty?
Every kataoka creation is accompanied by a Lifetime Limited Warranty, a testament to our unwavering commitment to quality and enduring artistry.
What is your lead time?
Each piece is individually handcrafted to order in our Tokyo atelier, a meticulous process that requires approximately four weeks. For time-sensitive requests, we invite you to contact us, and we will do our utmost to accommodate your needs.
What quality are kataoka diamonds?
All the diamonds we use for our standard designs are D color, Clarity VS-1, excellent cut minimum, unless specified. This standard is maintained for diamonds larger than 0.25 ct. If you wish to have higher quality diamonds set on your kataoka treasure, please contact us.
What makes kataoka’s metals unique?
Each metal blend is custom-formulated in-house, crafted for its purity, durability, and unparalleled sheen. Ethically recycled from Japan’s advanced semiconductor industry, our gold and platinum reflect both sustainability and understated elegance.
Can you use silver in your creations?
No. At kataoka, we work exclusively with custom-blended gold and platinum, chosen for their exceptional quality, hypoallergenic properties, and timeless appeal.
Where do you source your gemstones?
Our gemstones are carefully hand-selected from trusted partners who share our unwavering commitment to ethical practices and exceptional quality. Each stone is chosen not just for its beauty and rarity, but also for its ability to reflect kataoka's dedication to timeless craftsmanship and artistry. While the origins may vary, our ethos remains constant—ensuring that every gemstone is ethically sourced and embodies the essence of refined elegance.
Where are kataoka creations made?
Every piece is meticulously handcrafted in our Tokyo atelier, where centuries-old techniques meet contemporary artistry.
Do you offer custom engraving?
We offer complimentary engraving on most rings. Please contact us with your request, and our client care team will assist in adding a personal touch to your treasure.
Do you offer repair services?
Yes, we offer repair services for all kataoka creations. Should your jewelry require restoration, please contact us for guidance on the process. Each repair is handled with the utmost care at our Tokyo atelier, ensuring your piece is returned to its original splendor.
What should I do if my jewelry is damaged?
In the event of damage, we recommend reaching out to our client care team immediately. Yoshinobu Katraokas will assess and restore your piece, ensuring it retains its original beauty.
Can you use lab-grown diamonds in your creations?
We create with natural diamonds exclusively, reflecting our dedication to authenticity and timeless elegance. These ethically sourced gems embody the story of the earth, enhancing the unique narrative of each kataoka creation.
Why are kataoka creations an investment?
kataoka jewelry reflects a legacy of craftsmanship, the purity of ethically sourced materials, and unparalleled design. Each piece is not merely jewelry—it is an heirloom to be cherished for generations, supported by our Lifetime Warranty.
Can I purchase a ring without the center stone?
Our rings are designed as harmonious compositions, where the center diamond plays an integral role. Offering complete creations ensures the beauty and integrity of our designs and preserves the Lifetime Warranty that accompanies every piece.
Can you set my gemstone in a kataoka design?
To maintain the integrity and quality of our craftsmanship, we work exclusively with our own ethically sourced gemstones, chosen for their compatibility with our designs.

About Payments, Shipping, and Returns

What countries do you ship to?
kataoka is delighted to offer worldwide shipping for our handcrafted creations. Our shipping service is complimentary for all kataoka orders, ensuring your masterpiece reaches you no matter where you are. Packages typically arrive within 2 business days and require an adult signature upon delivery, providing a safe and secure journey for your treasured piece.
What is your returns policy?
As each kataoka creation is handcrafted to order, all sales are final. This policy reflects the individuality and exclusivity of every piece. We kindly encourage you to contact us with any questions prior to purchase to ensure your complete satisfaction.
What can I do if I ordered the wrong ring size?
We’re here to help. For orders placed directly with kataoka, we offer one complimentary resizing within the first year of purchase.

For our US clients, simply send your ring to our New York Flagship store. From there, we’ll handle everything, including sending it to our Tokyo atelier for resizing and returning it to you in New York. You'll only cover the domestic shipping fee.

For our international clients, you'll need to send the ring directly to our atelier in Tokyo, and will be responsible for the shipping fees to and from Japan.

For rings purchased through an Exclusive Partner, resizing is available for a $250 fee. Please contact our client care team for assistance.
What’s the best way to ensure I get an accurate ring size?
For precision, we recommend visiting a kataoka Flagship Store or a trusted local jeweler to measure your finger in US size. The ideal time to do so is in the afternoon or early evening, when finger size is most stable. Remember, finger size can fluctuate with temperature—fingers are slightly larger in warmer weather and smaller in colder conditions.
How many times can I resize my ring?
Your ring can be resized as many times as needed to achieve the perfect fit. However, for designs featuring delicate stones, certain limitations may apply to ensure the integrity of your piece. Contact us for tailored guidance.
Do you take credit cards?
Yes. We accept Visa, Mastercard, Discover, JCB, and American Express. All transactions are processed securely, and no credit card information is stored in our database.
Do you offer financing options?
Currently, we do not offer financing. However, please reach out to us, and we’ll do our best to assist you with your investment in a kataoka treasure.
Where do your jewelry ship from?
All orders are shipped directly from our atelier in Tokyo, Japan.
Can I track my order?
Absolutely. Once your order is shipped, we’ll provide a tracking number via email. You can also check the status of your order under "My Account" on our website.
Are there additional costs upon delivery?
For US clients, customs duties and paperwork are fully managed by us, ensuring a seamless delivery with no unexpected fees. International clients may incur customs duties based on local regulations. For accurate details, we recommend consulting your country’s customs agency.
How do I cancel or change an order?
If you need to make changes or cancel your order, please contact us within 24 hours of placing it. Once production begins, we regret that modifications or cancellations are not possible.
Do you provide appraisals?
While we do not provide appraisals directly, we can issue a detailed receipt for insurance purposes. For formal appraisals, we recommend consulting a certified, third-party expert.

Other Questions

Do you have sales?
At kataoka, we are committed to offering exclusive jewelry pieces, each meticulously handcrafted in limited quantities. Our pricing reflects the authenticity, rarity, and artistry of our creations, ensuring a consistent and transparent approach to value.

Instead of sales or promotions, we focus on delivering enduring quality and timeless beauty. For updates on special events or limited releases, we invite you to join our exclusive newsletter. At kataoka, every piece is a testament to unmatched craftsmanship and a dedication to excellence.
What are your Privacy Policy and Terms of Use?
You can review them here. For any questions or clarifications, feel free to reach out to us directly.
How do I apply to become a kataoka Exclusive Partner?
PFor all business inquiries, including becoming an Exclusive Partner, please contact us directly. We look forward to exploring potential partnerships.
I have a press inquiry, who should I contact?
For press inquiries, please reach out to us. We would be delighted to assist with your request.
Are you currently hiring?
We are always interested in welcoming passionate and talented individuals to our team. If you’d like to explore opportunities with kataoka, please send us your resume. Should a position align with your skills, we’ll be in touch.
Still need to contact us?
We are here to assist with any further questions or comments. Please don’t hesitate to reach out to us.

Delivery

World Map

The Art of Patience

Every piece of kataoka jewelry is a testament to the artistry of handcrafting and meticulous care. Each creation is made to order, requiring approximately 4 weeks to complete. Should your request be time-sensitive, we invite you to share your timeline, and we will endeavor to meet it with the utmost consideration.

Effortless Global Delivery

We are pleased to offer worldwide delivery through our trusted partner, FedEx International Priority. This ensures that your kataoka creation arrives swiftly, often within 2 business days, no matter where you are. Shipping fees complimentary for all orders, with the exception of repairs, resizings, and Peter Ivy’s creations. Rest assured, your treasure is securely packaged for its journey to you.

Final Sale Policy

Each piece of kataoka jewelry is a bespoke creation, crafted to your specifications. As such, all sales are final, and we are unable to accommodate returns or exchanges.

In the Rare Event of a Defect

In the rare instance that you receive a defective or incorrect item, we kindly request that you contact us within 7 days of delivery, accompanied by photographs of the item and its packaging. Upon review, we will promptly address and rectify the issue.

To ensure the safe return of the item, we ask that it be securely packaged, as we are unable to accept items that have been altered, damaged, or compromised during transit. While we take every precaution to assist you, we regret that we cannot assume responsibility for lost or damaged returns..

Jewelry Care Guide

Stocksits

Every piece of kataoka jewelry is a masterpiece—an elegant union of artistry, tradition, and timeless design. Handcrafted with the utmost precision, these creations are designed to endure, to be cherished, and to inspire. To preserve their radiant allure, we invite you to explore our recommendations for care, ensuring your heirlooms shine brilliantly for generations to come.

Preserving Radiance

Snowflake Ring Supreme-Antique
Wearing is Caring
Each kataoka creation is meant to be worn and admired. Over time, noble metals develop a graceful patina, enhancing their natural charm. Regular wear reveals this quiet beauty, yet treating each piece with care will ensure its enduring elegance.
Safeguard Against Damage
Protect your treasures from life’s more rigorous moments. Remove your jewelry before engaging in activities that might expose it to impact, chemicals, or harsh environments. Safeguard them from unnecessary wear to keep their brilliance untarnished.
Steer Clear of Harmful Products
To maintain their luster, avoid exposing your jewelry to perfumes, lotions, and chemicals. These substances can dull metals and diminish the vibrant sparkle of gemstones.
Provide the Proper Surroundings
When not adorning you, store your jewelry in its original kataoka box, thoughtfully designed to cradle and protect each piece. Keep your treasures away from humidity and extreme temperatures, preserving their delicate essence.

Restoring Brilliance

wedding bands
Gold and Platinum
Even the finest metals may lose their glow over time. There are several ways to restore these noble metals to their full radiance.
Care instructions depend on the condition of your jewelry:
  • If your jewelry is tarnished or slightly oxidized, clean it with warm water and gently rub it with a soft cloth, avoiding circular motions. Instead, rub in the same direction. Dry it gently with a soft cloth or a jewelry cleaning cloth.
  • For heavily tarnished jewelry, you can use a dip cleaner specifically formulated for gold and platinum. Soak the jewelry in the liquid for a maximum of 10 seconds, rinse it thoroughly in warm water, and dry it well with a soft cloth.
  • If you think a more thorough clean is necessary, please visit a kataoka Flagship Store with your jewelry.
Diamond Jewelry
Diamonds, symbols of strength and light, deserve exceptional care and avoid interactions with chlorine and other chemicals.
To maintain the brilliance of diamonds:
  • Use a soft brush and lukewarm water with a small amount of mild detergent specifically formulated for jewelry.
  • Gently clean the diamonds with the soft brush and soapy water, then rinse and pat them dry with a soft cloth.
  • For a deeper cleaning, please take your diamond jewelry to a kataoka store.
Gemstone Jewelry
Jewelry with stones other than diamonds, when properly cared for, can endure for generations to come. These precious stones should not be exposed to salt water, chemicals, perfume, or hairspray, as these substances can gradually diminish the finish and polish of the gems. Avoid using commercial cleaning solutions or ultrasonic steam cleaners. Additionally, sudden temperature changes should be avoided, as they may cause stress to the gemstones.
  • Sapphire, Ruby, Topaz, Tourmaline, Quartz, Spinel: Clean these with warm water and a soft brush before patting them dry with a soft cloth.
  • Aquamarine, Amethyst, Tanzanite, Garnet, Moonstone: These precious stones are especially sensitive to temperature changes, so take great care to avoid exposure to extreme temperatures or thermal shocks. Clean them with warm water and a soft brush before patting them dry with a soft cloth.
  • Emerald, Opal, Pearl: These gems are relatively soft and porous, making them more susceptible to damage from exposure to liquids, oils, chemicals and extreme temperatures. To clean them, gently wipe them with a soft cloth to maintain their natural beauty.
What to do if your jewelry is damaged
Your kataoka piece is a legacy of craftsmanship, designed to be cherished forever. If your jewelry sustains damage or requires restoration, we are here to assist. Yoshinobu Kataoka is dedicated to restoring your treasure with the same meticulous care it was created. Simply reach out to us or visit one of our Houses of Elegance in Tokyo or New York. We are honored to preserve the beauty of your heirlooms and ensure their story continues for generations to come.

Custom-Blended Metals

Custom-Blended Metals, from left to right: 18k Rose Gold, 18k Beige Gold, 18k Grey Gold, Platinum 900.

From left to right, 18k Rose Gold - 18k Beige Gold - 18k Grey Gold - Platinum 900

At kataoka, metal is more than a material—it is the canvas for a timeless narrative of artistry and innovation. Each piece begins its journey in our Tokyo atelier, where the finest recycled gold from Japan's advanced semiconductor industry is transformed into a medium of unparalleled purity, glowing with 99.9% refinement.

Our rose gold exudes a soft, luminous warmth, while the subtle honeyed hue of beige gold offers an understated elegance that enhances every gemstone it embraces. For those seeking brilliance and resilience, our platinum is meticulously blended to achieve enduring shine and strength, embodying sophistication at its purest.

Designed for comfort and grace, our nickel-free, hypoallergenic metals ensure each creation is a pleasure to wear. Every kataoka piece reflects an unwavering dedication to detail, crafting not just jewelry but heirlooms, destined to be cherished across generations.

Limited Lifetime Warranty

Mount Fuji, Japan

Mount Fuji, Japan.

At kataoka, every creation is an enduring promise of artistry and excellence. To honor this commitment, we extend a Limited Lifetime Warranty, ensuring your piece remains a treasured part of your journey. This warranty embraces repair or, when necessary, replacement for any structural flaw arising from our materials or craftsmanship under normal use. Each kataoka piece is designed to be cherished for generations, reflecting the timeless beauty and precision of our atelier.

Please note, this guarantee is rooted in the purity of our work. Alterations made by third parties, or damages from unforeseen mishandling, fall outside this promise of care.

For creations acquired through our authorized partners, we kindly request you reach out to them for assistance in initiating your warranty process.