Showing 138 products
![[Pre-owned] 18K Yellow Gold Akoya Pearl Ring, 3.3mm-3.8mm, 3.7g, #9](http://koufuku.jp/cdn/shop/files/2000000099224_2.jpg?v=1765877331&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.61ct, D 0.38ct, 6.3g, #8](http://koufuku.jp/cdn/shop/files/2000000052793_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18WG RUBY Ruby Ring, R1.16ct, D0.15ct, 2.6g, #13.5](http://koufuku.jp/cdn/shop/files/2000000035987_2.jpg?v=1764830303&width=480)
![[Pre-owned] 18K Yellow Gold South Sea Pearl Baroque Pearl Pendant Necklace, 11.8mm, 5.0g](http://koufuku.jp/cdn/shop/files/2000000099231_2.jpg?v=1764830276&width=480)
![[Used] K18WG RUBY Ruby ring R0.99ct D0.70ct AIGS non-heated identification book 2.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000047881_4.jpg?v=1764830276&width=480)
![[Pre-owned] K18WG Emerald Ring, E2.40ct, D0.26ct, 2.9g, #13.5](http://koufuku.jp/cdn/shop/files/2000000036212_2.jpg?v=1762316313&width=480)
![[Used] 18K Yellow Gold Emerald Ring, E0.17ct, D0.26ct, 4.5g, #11](http://koufuku.jp/cdn/shop/files/DSC_1990_6a68f3bf-17a7-400d-80f6-f2ab14af4719.jpg?v=1775180286&width=480)
![[Pre-owned] K18YG Emerald and Diamond Ring, E0.56ct, D0.75ct, 8.0g, #15](http://koufuku.jp/cdn/shop/files/2000000040257_2.jpg?v=1762391100&width=480)
![[Used] K18WG Emerald Ring E2.47ct D0.87ct 6.4g #13](http://koufuku.jp/cdn/shop/files/2000000036656_2.jpg?v=1762391103&width=480)
![[Pre-owned] 18K Yellow Gold Jadeite Jadeite Ring, J2.54ct, D1.00ct, 7.2g, #11.5](http://koufuku.jp/cdn/shop/files/2000000041001_2.jpg?v=1762391104&width=480)
![[Used] K18YG Emerald Ring E0.77ct D0.81ct 7.1g #13](http://koufuku.jp/cdn/shop/files/2000000053134_2.jpg?v=1762391139&width=480)
![[Used] BRINKHAUS 18K/PT DIAMOND RING Diamond Ring 11.4g #16 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000028026_2.jpg?v=1762391160&width=480)
![[Used] K18YG DIAMOND Ring D1.00ct 4.0g #11](http://koufuku.jp/cdn/shop/files/2000000053165_2.jpg?v=1762397785&width=480)
![[Used] K18WG EMERALD RING E1.51ct D0.55ct 4.1g #10.5](http://koufuku.jp/cdn/shop/files/2000000044644_2.jpg?v=1762316313&width=480)
![[Pre-owned] T&Co Tiffany 18K Yellow Gold T Two Bracelet 2.9g One Price](http://koufuku.jp/cdn/shop/files/2000000006598_2.jpg?v=1762391063&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.18ct, D0.58ct, 3.3g, #12.5](http://koufuku.jp/cdn/shop/files/2000000094342_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S0.975ct, D0.45ct, with sorting, 2.5g, #13](http://koufuku.jp/cdn/shop/files/2000000089096_3.jpg?v=1760678193&width=480)
Sold Out
![[Used] PT900 OPAL Opal Ring, OP 2.49ct, D 0.60ct, 10.1g, #15.5](http://koufuku.jp/cdn/shop/files/2000000011332_2.jpg?v=1760667250&width=480)
We also recommend these products
Recommended Items![[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)
![[Used] PT1000/PT900 BLACK OPAL NECKLACE Black Opal Pendant Necklace BO7.57ct D1.34ct 10.7g](http://koufuku.jp/cdn/shop/files/2000000112718_2.jpg?v=1771816794&width=480)
Sold Out
KOUFUKU is an e-commerce site that handles a wide range of products, from jewelry and precious metals to brand bags, brand watches, brand apparel, and tableware. In addition to sales, we also offer a purchase service.