Showing 1961 products
![[Pre-owned] K18YG Emerald & Sapphire Ring E2.30ct S0.28ct D0.14ct 8.0g #8](http://koufuku.jp/cdn/shop/files/2000000071091_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG Ruby Ring R0.62ct D0.05ct 2.0g #6.5](http://koufuku.jp/cdn/shop/files/2000000105598_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG Ruby Ring R0.27ct D0.08ct 2.4g #8](http://koufuku.jp/cdn/shop/files/2000000105581_2.jpg?v=1762391160&width=480)
![[Pre-owned] K18PG Diamond Ring D1.60ct 5.9g #12](http://koufuku.jp/cdn/shop/files/DSC_3934.jpg?v=1769670729&width=480)
![[Pre-owned] PT900 Jadeite Ring J1.83ct D0.44ct 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000106076_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG Ruby Ring R1.43ct D0.75ct 7.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000010946_2.jpg?v=1762391162&width=480)
![[Pre-owned] K18WG Tanzanite Ring T2.52ct D0.63ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000027340_2.jpg?v=1762391163&width=480)
![[Pre-owned] K18YG Ruby Ring R1.63ct D0.32ct 5.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000041063_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring S1.25ct D1.19ct 5.5g #14](http://koufuku.jp/cdn/shop/files/2000000044194_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG Ruby Ring, R0.69ct, D0.45ct, with NGL Appraisal Report, 6.0g, Size 16](http://koufuku.jp/cdn/shop/files/2000000115207_3.jpg?v=1762391161&width=480)
![[Pre-owned] PT850 SAPPHIRE Golden Sapphire Ring GS2.34ct D0.55ct 4.7g #15](http://koufuku.jp/cdn/shop/files/2000000108537_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18WG Jadeite Ring J10.45ct D0.36ct 6.6g #13](http://koufuku.jp/cdn/shop/files/2000000034263_2.jpg?v=1762391162&width=480)
![[Pre-owned] K18YG Ruby Ring, R2.80ct D0.11ct, with NGL Appraisal, 7.2g, Size #15](http://koufuku.jp/cdn/shop/files/DSC_1977.jpg?v=1775179861&width=480)
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![[Pre-owned] K18YG Ruby Ring, R3.00ct D0.30ct, with NGL Appraisal, 7.8g, Size 14](http://koufuku.jp/cdn/shop/files/2000000115191_3.jpg?v=1762391160&width=480)
![[Pre-owned] K18YG Ruby Ring R1.48ct D1.18ct 8.5g #11.5](http://koufuku.jp/cdn/shop/files/2000000115450_2.jpg?v=1762391162&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)
![[Pre-owned] KABANA 18K Yellow Gold Turquoise Ring 16.5g Fixed Price 20](http://koufuku.jp/cdn/shop/files/2000000105222_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG Emerald Ring DIA 7.6g #13](http://koufuku.jp/cdn/shop/files/2000000064086_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18YG AKOYA PEARL RING 6.9mm D0.48ct 5.9g](http://koufuku.jp/cdn/shop/files/2000000115146_2.jpg?v=1762391140&width=480)
![[Pre-owned] K18YG Ruby Ring R0.31ct D0.80ct 5.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000106977_2.jpg?v=1762391139&width=480)
![[Pre-owned] PT900 Lavender Jadeite Ring, D0.60ct, 8.3g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000115726_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring, E1.00ct D0.30ct, 3.2g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000036441_2.jpg?v=1762391139&width=480)
![[Pre-owned] Dear Blossom SV/K18 Feather Design Ring 5.1g ONE PRICE #15.5](http://koufuku.jp/cdn/shop/files/2000000026671_2.jpg?v=1762391139&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)