Showing 1787 products
![[Pre-owned] PT900 Diamond Ring, 0.462ct, D Color, VS1 Clarity, Excellent Cut (H&C), 0.47ct total weight, 2.3g, Size 8.5](http://koufuku.jp/cdn/shop/files/2000000070995_2.jpg?v=1759735437&width=480)
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![[Pre-owned] PT900 Diamond Ring 0.597ct, G Color, SI1 Clarity, Good Cut, 4.7g, Size 11](http://koufuku.jp/cdn/shop/files/2000000103198_3.jpg?v=1750923953&width=480)
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![[Pre-owned] PT900 Diamond Ring 0.71ct, with Ginza Wako certificate, 4.1g, size 7](http://koufuku.jp/cdn/shop/files/2000000112923_3.jpg?v=1763175990&width=480)
![[Pre-owned] PT900 Diamond Ring 0.83ct D1.95ct 9.9g #11](http://koufuku.jp/cdn/shop/files/2000000025650_2.jpg?v=1750923953&width=480)
![[Pre-owned] PT900 DIAMOND Ring 3.019ct D0.45ct 6.5g #9](http://koufuku.jp/cdn/shop/files/DSC_2014_994554b8-725c-4e59-811f-f3f8329adec4.jpg?v=1775188842&width=480)
![[Pre-owned] PT900 DIAMOND Ring D0.25ct 5.4g #12.5 with Appraisal](http://koufuku.jp/cdn/shop/files/2000000106359_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Diamond Ring D0.27ct 5.7g #10](http://koufuku.jp/cdn/shop/files/2000000009193_2.jpg?v=1765163848&width=480)
![[Pre-owned] PT900 Diamond Ring D0.44ct 15.1g #14](http://koufuku.jp/cdn/shop/files/2000000124421_2.jpg?v=1766219119&width=480)
![[Pre-owned] PT900 DIAMOND Ring D0.77ct D0.30ct 7.3g #13](http://koufuku.jp/cdn/shop/files/2000000086163_2.jpg?v=1752392450&width=480)
![[Pre-owned] PT900 Diamond Ring D1.00ct 4.9g #13](http://koufuku.jp/cdn/shop/files/2000000009629_2.jpg?v=1750923952&width=480)
![[Pre-owned] PT900 Diamond Ring D1.00ct 7.6g #12](http://koufuku.jp/cdn/shop/files/2000000009469_2.jpg?v=1750923953&width=480)
![[Pre-owned] PT900 Diamond & Sapphire Ring D0.26ct S0.55ct 3.9g #11](http://koufuku.jp/cdn/shop/files/2000000011387_2.jpg?v=1759988718&width=480)
![[Pre-owned] PT900 Marquise Cut Diamond Ring 1.006ct, G Color, I1 Clarity, D0.36ct, CGL Certified, 8.0g, Size 18.5](http://koufuku.jp/cdn/shop/files/2000000014470_3.jpg?v=1765877331&width=480)
![[Pre-owned] PT900 EMERALD Ring E0.67ct D0.21ct with Sorting Memo, 5.0g, Size #14](http://koufuku.jp/cdn/shop/files/2000000007632_3.jpg?v=1762316313&width=480)
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![[Pre-owned] PT900 EMERALD PENDANT TOP, Emerald Pendant Top, E9.73ct, E1.98ct, D0.16ct, with Sorting, 7.1g](http://koufuku.jp/cdn/shop/files/2000000087368_3.jpg?v=1786337429&width=480)
![[Used] PT900 EMERALD RING Emerald/Diamond Ring E0.53ct D0.38ct 13.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000133676_2.jpg?v=1778492460&width=480)
![[Used] PT900 EMERALD RING Emerald V-Line Ring E0.80ct D0.29ct 5.9g #12](http://koufuku.jp/cdn/shop/files/2000000121369_2.jpg?v=1771814766&width=480)
![[Pre-owned] PT900 EMERALD RING 0.40ct D0.19ct 4.7g #13](http://koufuku.jp/cdn/shop/files/2000000147567_2.jpg?v=1789104510&width=480)
![[Pre-owned] PT900 EMERALD RING E0.21ct D0.13ct 7.0g #12](http://koufuku.jp/cdn/shop/files/2000000124322_2.jpg?v=1785996074&width=480)
![[Pre-owned] PT900 EMERALD RING E0.43ct D0.45ct 5.6g #8.5](http://koufuku.jp/cdn/shop/files/2000000147383_2.jpg?v=1789105449&width=480)
![[Pre-owned] PT900 EMERALD RING E0.50ct D0.45ct 5.6g #10](http://koufuku.jp/cdn/shop/files/2000000147369_2.jpg?v=1789105612&width=480)
![[Pre-owned] PT900 EMERALD RING E0.53ct D0.47ct 5.9g #12](http://koufuku.jp/cdn/shop/files/2000000117287_2.jpg?v=1766992784&width=480)
![[Pre-owned] PT900 EMERALD RING E0.54ct D0.34ct 4.8g #10.5](http://koufuku.jp/cdn/shop/files/2000000125800_2.jpg?v=1785993739&width=480)
![[Pre-owned] PT900 EMERALD RING E0.62ct D1.30ct 11.9g #12.5](http://koufuku.jp/cdn/shop/files/2000000127651_2.jpg?v=1771658187&width=480)
KOUFUKU is an e-commerce site that offers a wide range of products, including jewelry, precious metals, designer bags, designer watches, designer apparel, and tableware. In addition to retail sales, we also provide purchase services.
![[Pre-owned] MITSUKOSHI K18YG Ruby & Diamond Ring R0.79ct D0.82ct 7.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000145907_2.jpg?v=1788151913&width=480)
![[Used] PT900 NO HEAT SAPPHIRE RING Sri Lankan Unheated Sapphire Ring S5.40ct D1.19ct GIA Certificate 10.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000133799_3.jpg?v=1777881348&width=480)
![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)