Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] PT900 MEXICO OPAL Ring D0.41ct 10.5g #15](http://koufuku.jp/cdn/shop/files/2000000029382_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18WG Black Opal Ring, BO 1.211ct, D 0.31ct, 4.1g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000045238_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 MEXICO OPAL Ring OP6.40ct D0.54ct with Sorting, 10.9g, Size #19](http://koufuku.jp/cdn/shop/files/2000000017143_3.jpg?v=1766219023&width=480)
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![[Pre-owned] PT900 DIAMOND Ring D0.83ct 6.4g #8](http://koufuku.jp/cdn/shop/files/2000000087191_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18WG SAPPHIRE Ring S0.95ct D0.27ct 4.4g #13.5](http://koufuku.jp/cdn/shop/files/2000000126050_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 Opal Ring OP9.59ct 12.2g #11.5](http://koufuku.jp/cdn/shop/files/2000000029610_2.jpg?v=1766219023&width=480)
![[Pre-owned] K18WG JADEITE Ring J2.53ct D0.43ct 5.0g #13.5](http://koufuku.jp/cdn/shop/files/2000000045856_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 MEXICO OPAL RING OP5.92ct D0.73ct with GRJ Sorting 12.8g Size 13](http://koufuku.jp/cdn/shop/files/2000000029870_2.jpg?v=1766219022&width=480)
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![[Pre-owned] K18WG Black Opal Ring BO7.89ct D0.47ct 6.7g #14.5](http://koufuku.jp/cdn/shop/files/2000000034225_2.jpg?v=1766219023&width=480)
![[Pre-owned] K18WG Pink Sapphire Ring, PS2.07ct, D0.45ct, with Appraisal Report, 5.6g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000025889_3.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG Golden Pearl Ring 12.1mm D0.47ct 8.5g #12](http://koufuku.jp/cdn/shop/files/2000000041124_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 MEXICO OPAL Ring OP4.53ct D0.22ct with NGL Appraisal, 7.6g, Size #9](http://koufuku.jp/cdn/shop/files/2000000064611_3.jpg?v=1766219022&width=480)
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![[Pre-owned] PT900 JADEITE Ring J2.01ct D1.26ct 7.6g #9](http://koufuku.jp/cdn/shop/files/2000000021782_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 Opal Cat's Eye Ring, OC3.94ct, D0.44ct, 9.0g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000103600_2.jpg?v=1766219022&width=480)
![[Pre-owned] T&Co. Tiffany PT950 Diamond Solitaire Ring 0.24ct 3.3g #7 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000006710_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 JADEITE Ring J5.606ct D0.11ct with Sorting Certificate, 6.5g, Size 10](http://koufuku.jp/cdn/shop/files/2000000126142_3.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 Kunzite Ring 4.36ct D0.51ct 11.7g #14](http://koufuku.jp/cdn/shop/files/2000000106137_2.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG PEARL Ring 10.6mm D0.40ct 8.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000043548_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 MEXICO OPAL Ring OP2.70ct D0.39ct 8.2g #15](http://koufuku.jp/cdn/shop/files/2000000015378_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 JADEITE Ring J1.354ct D0.43ct with NGL Sorting, 6.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000028644_3.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG Burmese Unheated Pink Sapphire Ring, PS2.68ct E0.35ct D0.63ct, with GIA Report, 8.0g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000041728_4.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG Sapphire, Green Garnet Ring S0.78ct G0.45ct D1.16ct 10.7g #13](http://koufuku.jp/cdn/shop/files/2000000121376_2.jpg?v=1766219023&width=480)
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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] K18YG South Sea White Pearl Ring P12.3mm D1.50ct 17.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000056586_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 Diamond V-shape Ring D1.03ct 5.5g #11](http://koufuku.jp/cdn/shop/files/2000000126067_2.jpg?v=1766219023&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)