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Consultation & Appointments
Visits to our office are by appointment only. Please contact us in advance if you plan to visit.
We are available on weekdays from 9:00 AM to 7:00 PM.
For weekends, we will accommodate your schedule, so feel free to reach out to us.
Jewelry Customization & Custom-made Orders
At Weiss, we offer jewelry customization and custom order services to ensure your satisfaction. Please don’t hesitate to consult us for your needs.
Payment Methods
We accept credit cards, bank transfers, and cash.
Shipping & Returns
If you wish to request a return, please contact us within 7 days of receiving the product.
Please note that we cannot accept returns for custom-made items.
For more details, please check here.
Aftercare Services
Weiss jewelry comes with a lifetime warranty. Each piece is handcrafted by skilled artisans using the highest quality diamonds, reflecting our confidence in the craftsmanship. To ensure you can enjoy your jewelry for years to come, we offer comprehensive aftercare services. For more details, please check here.
Indulge in the refined brilliance of our Natural Tennis Diamond Bracelet, meticulously crafted in 18K white gold.
Featuring CGL-certified diamonds, this elegant piece showcases round diamonds and five exquisite emerald-cut stones, creating a captivating contrast.
With a total of 4.553 carats, the diamonds range from D to F color and VVS2 to SI1 clarity, ensuring exceptional brilliance and purity.
Designed in an 18cm length, this bracelet offers a sophisticated and timeless appeal—perfect for both everyday luxury and special occasions.
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よくあるご質問
FAQ
I just learned about Weiss. What kind of brand is it?
Weiss has been supplying the highest-quality natural diamonds to jewelry stores across Japan for over 30 years as a wholesaler. We specialize in fancy-shaped and fancy-colored diamonds and take pride in our extensive inventory.
Recently, we have launched a website and other sales platforms to deliver jewelry directly to customers at reasonable prices.
Where is the jewelry made?
All of our jewelry is handcrafted in Japan by our skilled artisans. Each piece is carefully and meticulously created after receiving an order, with great attention to detail and care.
What metals and materials are used in your jewelry?
All of our jewelry is crafted using natural diamonds and high-quality metals. We meticulously select metal and such as gold and platinum to ensure durability, beauty and lasting quality in every piece.
Are your products used?
Weiss' products are all original, designed and created by our skilled designers and craftmen.
Can I buy online?
We recommend that you view the product in person and make your purchase only after being fully satisfied. However, if visiting us is difficult, please feel free to contact us.
Can I view your diamonds and jewelry in person?
Certainly! Please visit our store to see the brilliance of our diamonds and the craftsmanship firsthand.
Do I need an appointment to visit your store?
While not mandatory, appointments are recommended for personalized attention. If you wish to come on the same day, please phone us before coming at 03-5818-2950
What payment methods do you accept?
We accept credit cards, bank transfers and cash payment.
Do you offer custom design consultation in person?
Yes, you can consult with our expert designers to discuss creating your own jewelry design. We don't charge for this service.
Please tell me about your returns/refund policies.
In-store purchases are subject to the same return and exchange policies as online purchases. For more details, please refer to our policy here. Contact us by phone (03-5818-2950) or email (admin@weissdiamonds.com). Our staff will respond with sincere attention.
reviews
お客様の声
Nancy
April 2026
★★★★★
CEO Adi is very friendly and professional. Nice experience!
Shimon B
March 2026
★★★★★
I bought my engagement ring for my wife here and absolutely loved their service! Adi, the CEO, was super helpful and so nice.
Their customer service is amazing as well. I highly recommend them if you are looking for an engagement ring or nice diamond rings at a reasonable price.
Nick R
January 2026
★★★★★
I purchased my engagement ring from Weiss Co. and had a great experience from start to finish. I chose a marquise-shaped diamond engagement ring despite having limited knowledge about diamonds, but Adi and his team took the time to clearly explain everything and made the entire process easy and reassuring.
They were also incredibly accommodating with a tight timeline, and the ring resizing was handled smoothly and professionally. Communication was clear, honest, and responsive throughout, which gave me confidence in my decision.
Thank you to Adi and the entire Weiss team for your expertise and support, I truly appreciate it.
