Custom Natural Diamond Jewelry & Fine Diamonds | Weiss Diamonds Tokyo
Weiss has been providing the highest quality natural diamonds to jewelry stores in Japan as a wholesaler for over 30 years.
We take pride in our extensive inventory, which features a wide range of fancy shapes, fancy colors, colorless diamonds, and round diamonds. Thanks to our rich selection and skilled craftsmen, we also offer custom-made jewelry tailored to perfectly fit our customers' desires.
newly arrived diamond jewelry
新入荷ダイヤモンドジュエリー
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Round & Emerald-cut Diamond Eternity Ring - approx. 1.07ct
Regular price ¥310,000 (Tax incl.)Unit price perNEW -
18KYG Cushion Fancy Yellow Diamond Earrings - 1.323ct
Regular price ¥420,000 (Tax incl.)Unit price perNEW -
18KPG Pink Sapphire Baguette-cut Diamond Ring
Regular price ¥340,000 (Tax incl.)Unit price perNEW -
18K Radiant-cut Near Colorless Diamond Ring - 1.5ct
Regular price ¥980,000 (Tax incl.)Unit price perNEW
Diamond Rings
ダイヤモンドリング
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Round Near Colorless Diamond Ring - 0.983ct
Regular price ¥540,000 (Tax incl.)Unit price per -
Mael Radiant Light Yellow Diamond Ring - 0.68ct
Regular price ¥280,000 (Tax incl.)Unit price per -
Mael Cushion Very Light Pink Diamond Ring - 0.25ct
Regular price ¥600,000 (Tax incl.)Unit price per -
Oval Fancy Orangy Pink Diamond Ring - 0.705ct
Regular price ¥690,000 (Tax incl.)Unit price perSold out
Diamond Necklaces
ダイヤモンドネックレス
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18K Round Near Colorless Diamond Pendant Necklace - 1.094ct
Regular price ¥550,000 (Tax incl.)Unit price perNEW -
18K Near Colorless Round Diamond Pendant Necklace - 1.032ct
Regular price ¥520,000 (Tax incl.)Unit price perNEW -
PT900/18K Fancy Vivid Orange Yellow Cushion-cut Diamond Pendant Necklace - 0.248ct
Regular price ¥320,000 (Tax incl.)Unit price per -
18KYG Heart Design Diamond Pendant Necklace - 0.3ct
Regular price ¥100,000 (Tax incl.)Unit price per
diamond bracelets
ダイヤモンドブレス
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Natural Diamond Tennis Bracelet DEF VS+ 1.64ct
Regular price ¥610,000 (Tax incl.)Unit price per -
18K Natural Diamond Tennis Bracelet - 4.42ct
Regular price ¥1,100,000 (Tax incl.)Unit price per -
18KYG Natural Diamond Tennis Bracelet - 4.53ct
Regular price ¥1,200,000 (Tax incl.)Unit price per -
18K Diamond Natural Tennis Bracelet - 5.71ct
Regular price ¥1,300,000 (Tax incl.)Unit price perSold out
diamond earrings
ダイヤモンドイヤリング
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18K Near Colorless Diamond Earrings Emerald-cut - 1.02ct
Regular price ¥380,000 (Tax incl.)Unit price per -
18K Diamond Earrings Round Cut - 0.54ct
Regular price ¥150,000 (Tax incl.)Unit price per -
18KYG Near Colorless Round Diamond Earrings - 1.746ct
Regular price ¥590,000 (Tax incl.)Unit price per -
18K Oval Blue Sapphire Diamond Earrings - 3.119ct
Regular price ¥320,000 (Tax incl.)Unit price per
loose diamonds
ダイヤモンドルース
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Natural Loose Diamond 0.998ct Colorless D Marquise
Regular price ¥450,000 (Tax incl.)Unit price perNEW -
Natural Loose Diamond 0.542ct Very Light Purplish Pink Oval
Contact us for price inquiry.
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Natural Loose Diamond 0.62ct Colorless E Cushion
Regular price ¥260,000 (Tax incl.)Unit price per -
Natural Loose Diamond 1.006ct Near Colorless G Cushion
Regular price ¥780,000 (Tax incl.)Unit price per
jewelry
ジュエリー
diamonds
ダイヤモンドルース
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.
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Certified Diamonds
Choose from diamonds that come with authentic third-party certification from trusted laboratories.
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Custom Design
Create your unique jewelry piece at an unbeatable price.
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Lifetime Guarantee
Enjoy a lifetime guarantee on resizing, polishing, and coating by our experienced staff.
Get 100% trade-in value for a future upgrade.(The upgrade is at least double the original purchase (any discounts disqualify))
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Established Expertise
Over 50 years of experience serving clients worldwide, with a wide range of choices and budget-friendly diamond imports.
