Showing 1961 products
![[Pre-owned] K18WG Pink Spinel Ring SP0.50ct D0.17ct 2.8g #13](http://koufuku.jp/cdn/shop/files/2000000115443_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring E2.10ct D0.16ct 2.8g #13](http://koufuku.jp/cdn/shop/files/2000000036298_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring, E2.50ct, D0.44ct, 4.3g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000045313_2.jpg?v=1762391139&width=480)
![[Pre-owned] I-PRIMO PT950 DIAMOND Ring 0.264ct 3.0g](http://koufuku.jp/cdn/shop/files/DSC_1993_002eca84-383d-42f2-92f5-2330587db75f.jpg?v=1775180378&width=480)
![[Pre-owned] K18YG Ruby Ring R0.43ct D0.18ct 5.1g #12](http://koufuku.jp/cdn/shop/files/2000000112503_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18YG Ruby Ring D0.19ct 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000026633_2.jpg?v=1762391138&width=480)
![[Pre-owned] K18YG Emerald Ring E0.77ct D0.81ct 7.1g #13](http://koufuku.jp/cdn/shop/files/2000000053134_2.jpg?v=1762391139&width=480)
![[Pre-owned] PT900 White South Sea Pearl Ring 10.3mm D0.19ct 7.0g #14](http://koufuku.jp/cdn/shop/files/2000000106816_2.jpg?v=1762391138&width=480)
![[Pre-owned] K18/PT900 DIAMOND Ring D0.40ct 7.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000106625_2.jpg?v=1762391138&width=480)
![[Pre-owned] Kunio Nakajima PT850/PT900 Pâte de verre Pendant Necklace, G0.37ct, 38.8g](http://koufuku.jp/cdn/shop/files/2000000017860_2.jpg?v=1762391121&width=480)
![[Pre-owned] PT900 SAPPHIRE Ring S1.68ct D0.65ct 8.6g #8](http://koufuku.jp/cdn/shop/files/2000000090573_2.jpg?v=1762391121&width=480)
![[Used] K18WG SOUTH SEA PEARL PENDANT NECKLACE White South Sea Pearl Pendant Necklace 9.5mm D0.25ct 4.6g](http://koufuku.jp/cdn/shop/files/2000000106205_2.jpg?v=1762391121&width=480)
![[Pre-owned] K18WG Sri Lankan Unheated Sapphire Ring, S11.53ct D1.78ct, with GRS Royal Blue Certificate, 10.0g, Size 13](http://koufuku.jp/cdn/shop/files/2000000070445_4.jpg?v=1762391121&width=480)
![[Pre-owned] K18WG Emerald Ring E4.39ct D0.70ct 5.9g #14](http://koufuku.jp/cdn/shop/files/2000000042145_2.jpg?v=1762391103&width=480)
![[Pre-owned] 18K White Gold Jadeite Ring J11.99ct D0.37ct 7.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000034577_2.jpg?v=1762391104&width=480)
![[Pre-owned] K18WG Jadeite Ring J3.56ct D0.48ct 6.2g #15.5](http://koufuku.jp/cdn/shop/files/2000000044125_2.jpg?v=1762391104&width=480)
![[Pre-owned] K18WG Unheated Color-Change Sapphire Ring S3.94ct D0.55ct with GRS Certificate, 4.6g, Size 14](http://koufuku.jp/cdn/shop/files/2000000089034_2.jpg?v=1762391103&width=480)
![[Pre-owned] K18YG/Plated Amethyst Pearl Necklace 11.7g](http://koufuku.jp/cdn/shop/files/2000000079820_2.jpg?v=1762391103&width=480)
![[Pre-owned] K18YG JADEITE Ring with GRJ Sorting, 2.0g, Size 10](http://koufuku.jp/cdn/shop/files/2000000040455_3.jpg?v=1762391103&width=480)
![[Pre-owned] K18WG Emerald Ring E6.03ct D0.60ct 4.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000038827_2.jpg?v=1762391101&width=480)
![[Pre-owned] K18WG Emerald Cat's Eye Ring E0.95ct D0.42ct 3.0g #14](http://koufuku.jp/cdn/shop/files/2000000038384_2.jpg?v=1762391103&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)