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.
new products
新着商品
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18K ピンクダイヤモンドリング 0.64ct Fancy Purplish Pink クッション
Regular priceUnit price per¥370,000
¥333,000 (税込)NEW -
18K イエローダイヤモンドリング 0.61ct Vivid Yellow VS1 ペア
Regular priceUnit price per¥350,000
¥315,000 (税込)NEW -
Princess Colorless Diamond Ring - 1.178ct
Regular priceUnit price per¥540,000
¥486,000 (税込)NEW -
Round Near Colorless Diamond Ring - 0.983ct
Regular priceUnit price per¥470,000
¥423,000 (税込)NEW
rings
リング
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Mael Radiant Light Yellow Diamond Ring - 0.68ct
Regular priceUnit price per¥280,000
¥252,000 (税込) -
Mael Radiant Light Green Diamond Ring - 1.275ct
Regular priceUnit price per¥680,000
¥612,000 (税込) -
Mael Cushion Very Light Pink Diamond Ring - 0.25ct
Regular priceUnit price per¥600,000
¥540,000 (税込) -
Oval Design Colorless Diamond Ring - 0.59ct
Regular priceUnit price per¥265,000
¥238,500 (税込)
necklaces
ネックレス
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Flower Design Diamond Pendant Necklace - 0.58ct
Regular priceUnit price per¥225,000
¥202,500 (税込) -
Heart-Shaped 3 Stones Cluster Diamond Pendant Necklace - 2ct
Regular priceUnit price per¥990,000
¥891,000 (税込) -
Mael Orange Yellow Pear Diamond Pendant Necklace - 1.075ct
Regular priceUnit price per¥580,000
¥522,000 (税込) -
Mael Light Green Cushion Diamond Pendant Necklace - 1.205ct
Regular priceUnit price per¥640,000
¥576,000 (税込)
bracelets
ブレスレット
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Customizable Diamond Bracelet 16cm
Regular priceUnit price per¥377,000
¥339,300 (税込) -
Diamond Tennis Bracelet - 3.04ct
Regular priceUnit price per¥550,000
¥495,000 (税込) -
Diamond - Sapphire CVD Tennis Bracelet - 5.94ct
Regular priceUnit price per¥440,000
¥396,000 (税込) -
Diamond - Ruby CVD Tennis Bracelet - 6.37ct
Regular priceUnit price per¥340,000
¥306,000 (税込)NEW
earrings
イヤリング
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Round Diamond Earrings - 0.731ct
Regular priceUnit price per¥200,000
¥180,000 (税込) -
18K White Gold Natural Diamond Halo Earrings Adjustable Design - 1.16ct
Regular priceUnit price per¥325,000
¥292,500 (税込) -
Mael Cushion Fancy Yellow Diamond Earrings - 0.99ct
Regular priceUnit price per¥460,000
¥414,000 (税込) -
Mael Pear Very Light Pink Diamond Earrings - 0.532ct
Regular priceUnit price per¥460,000
¥414,000 (税込)
diamonds
ダイヤモンド
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Natural Loose Diamond 0.906ct Colorless D Oval
Regular priceUnit price per¥598,000
¥538,200 (税込) -
Natural Loose Diamond 0.558ct Fancy Deep Brownish Yellow Oval
Contact us for price inquiry.
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Natural Loose Diamond 0.542ct Very Light Purplish Pink Oval
Contact us for price inquiry.
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Natural Loose Diamond 2.568ct Fancy Intense Orangy Yellow Oval
Contact us for price inquiry.
Sold out
reviews
お客様の声
Gildo Aleshinsky
July 12th, 2024
★★★★★
We found Weiss on Instagram and followed to their website. We were interested to see a specific item but when we came to their studio we saw such an amazing collection of diamonds that we decided to go with a custom design. Their designer gave us a sketch and we made an amazing pendant! Thank you so much for making a dream come true!
Guy Landau
July 8th, 2024
★★★★★
Excellent service and great price. We've chosen the perfect diamonds from their large inventory to fit our jewelry (ring). Highly recommend, we'll definitely come back.
Trade 303
June 15th 2024
★★★★★
My fiancé and I visited Weiss Co in Japan for an engagement ring on our last day. Adi and his team were incredibly helpful and provided exceptional service, even as their day was ending. We found a perfect ring and plan to return for our wedding bands. The quality and attention to budget were impressive. Thank you, Adi! 5/5 service.
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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.
