Showing 1964 products
![[Pre-owned] K18WG Diamond Pendant Necklace D1.08ct 6.3g](http://koufuku.jp/cdn/shop/files/2000000021317_2.jpg?v=1763176024&width=480)
![[Pre-owned] K18WG Diamond Ring 7.0g #8.5](http://koufuku.jp/cdn/shop/files/2000000042039_2.jpg?v=1763176024&width=480)
![[Pre-owned] Necklace PT850/PT900 BLACK OPAL Pendant Necklace BO0.89ct D0.58ct CGL Sorting 6.5g](http://koufuku.jp/cdn/shop/files/2000000029221_4.jpg?v=1763176275&width=480)
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![[Pre-owned] Mitsukoshi Department Store PT900 Diamond Ring D0.50ct 4.0g #8](http://koufuku.jp/cdn/shop/files/DSC_2050.jpg?v=1775189628&width=480)
![[Pre-owned] K18YG Opal Pendant Necklace, 18.4ct, with Sorting, 8.7g](http://koufuku.jp/cdn/shop/files/2000000074603_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO6.93ct, D1.45ct, 12.1g, Size 17](http://koufuku.jp/cdn/shop/files/2000000013503_2.jpg?v=1763175991&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 Chrysoberyl Cat's Eye Ring CE1.46ct D0.65ct 7.4g #11](http://koufuku.jp/cdn/shop/files/2000000018157_2.jpg?v=1763175991&width=480)
![[Pre-owned] NINA RICCI K18WG Multi-stone Pendant Necklace 6.7g ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000024875_3.jpg?v=1763176253&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO4.47ct D0.53ct 11.0g 14.5](http://koufuku.jp/cdn/shop/files/2000000098845_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO3.16ct D1.03ct, with appraisal report, 9.0g, size #10](http://koufuku.jp/cdn/shop/files/2000000023267_4.jpg?v=1763175991&width=480)
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![[Pre-owned] PT900 BLACK OPAL Ring BO6.70ct D0.185ct 7.2g #13](http://koufuku.jp/cdn/shop/files/2000000093949_2.jpg?v=1763175991&width=480)
![[Used] PT900 OPAL RING Opal Ring OP1.35ct D0.12ct 5.3g #14](http://koufuku.jp/cdn/shop/files/2000000082837_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO4.65ct D0.34ct 11.6g #15](http://koufuku.jp/cdn/shop/files/2000000043142_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO1.61ct, D1.44ct, with Sorting, 12.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000019833_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Jadeite Pendant Necklace D1.70ct 14.0g](http://koufuku.jp/cdn/shop/files/2000000057798_3.jpg?v=1763176295&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO 0.70ct, D 0.25ct, 5.1g, Size 14](http://koufuku.jp/cdn/shop/files/2000000068565_2.jpg?v=1763175991&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 Unheated Sapphire Ring S4.18ct D0.60ct with Sorting, 6.2g, Size 13](http://koufuku.jp/cdn/shop/files/2000000019468_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT950 Black Opal Ring, BO3.08ct D1.47ct, 7.8g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000006574_2.jpg?v=1763175991&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] K18WG Chrysoberyl Cat's Eye Ring, CE 2.32ct, D 0.91ct, 6.1g, Size 13](http://koufuku.jp/cdn/shop/files/2000000034478_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Sapphire Ring, S1.54ct, D0.677ct, with GRJ Grading Report, 10.7g, Size 15](http://koufuku.jp/cdn/shop/files/2000000018546_3.jpg?v=1763175990&width=480)
![[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)