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.

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.

All of our jewelry is crafted using natural diamonds and high-quality metals. We meticulously select metals such as gold and platinum to ensure durability, beauty, and lasting quality in every piece.

We accept credit cards, bank transfers, and cash.

Reach us at admin@weissdiamonds.com or 03-5818-2950.

We are open Mon-Fri from 9am to 7pm.

Certainly! Please visit our store to see the brilliance of our diamonds and the craftsmanship firsthand.

While not mandatory, appointments are recommended for personalized attention. If you wish to come on the same day, please phone us before calling at 03-5818-2950

Absolutely! Our knowledgeable staff is ready to assist you with in-store purchases.

Yes, you can consult with our expert designers to discuss creating your own jewelry design. We don't charge for this service.

Yes, we provide in-store ring resizing services for all jewelry bought in our store.

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.

Yes. 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.