Showing 1787 products
![[Used] K14YG DIAMOND RING 5.5g #14](http://koufuku.jp/cdn/shop/files/2000000131580_2.jpg?v=1771814766&width=480)
![[Pre-owned] K14YG EMERALD NECKLACE 9-strand emerald necklace 76.5g](http://koufuku.jp/cdn/shop/files/2000000129587_2.jpg?v=1771658186&width=480)
![[Pre-owned] K14YG Emerald Bracelet 17.5cm 8.8g](http://koufuku.jp/cdn/shop/files/2000000099682_3.jpg?v=1769651431&width=480)
![[Pre-owned] K18 Diamond 0.503ct E Color VS1 Class 3Excellent H&C D0.07ct CGL Certificate 2.3g #10](http://koufuku.jp/cdn/shop/files/2000000044507_3.jpg?v=1767585997&width=480)
![[Pre-owned] K18 Diamond Ring D0.53ct 2.5g #12](http://koufuku.jp/cdn/shop/files/70216_01.jpg?v=1743142006&width=480)
![[Pre-owned] K18 Diamond Ring D1.02ct 6.3g #15.5](http://koufuku.jp/cdn/shop/files/2000000106298_2.jpg?v=1765877448&width=480)
![[Pre-owned] K18 Green Garnet Ring GG2.08ct D0.50ct 6.4g #12](http://koufuku.jp/cdn/shop/files/2000000070698_2.jpg?v=1744890572&width=480)
![[Pre-owned] K18 Ruby Ring, Mozambique Ruby Ring, R8.06ct D2.43ct, with GRS Certificate, 8.6g, Size 14](http://koufuku.jp/cdn/shop/files/2000000113876_3.jpg?v=1765161893&width=480)
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![[Pre-owned] K18 Mozambique Unheated Ruby Ring R2.17ct D2.37ct with GRS Certificate, 6.8g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000089232_3.jpg?v=1765161777&width=480)
![[Pre-owned] K18 Ruby Ring R1.19ct D0.82ct 4.8g #10.5](http://koufuku.jp/cdn/shop/files/2000000039800_2.jpg?v=1749175383&width=480)
![[Pre-owned] K18 Ruby Ring R1.18ct D0.48ct CGL Sorting 7.6g #17](http://koufuku.jp/cdn/shop/files/2000000126036_3.jpg?v=1767585974&width=480)
![[Pre-owned] K18 RUBY Ring R1.77ct D0.82ct 12.0g #13](http://koufuku.jp/cdn/shop/files/2000000124261_2.jpg?v=1767585974&width=480)
![[Pre-owned] K18 Ruby Ring R1.83ct D0.25ct 12.1g #10](http://koufuku.jp/cdn/shop/files/2000000124360_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18 Ruby Ring R1.024ct D0.12ct CGL Sorting 9.6g #14](http://koufuku.jp/cdn/shop/files/DSC_2081.jpg?v=1774689978&width=480)
![[Pre-owned] K18 SAPPHIRE DIAMOND RING Sapphire 2.37ct Diamond 1.16ct 12.1g #14.5](http://koufuku.jp/cdn/shop/files/2000000069470_2.jpg?v=1789101362&width=480)
![[Pre-owned] K18/K10WG Diamond Pendant Necklace 0.04ct 2.0g](http://koufuku.jp/cdn/shop/files/2000000042374_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18/K18WG Diamond Pendant Necklace D0.10ct 6.2g](http://koufuku.jp/cdn/shop/files/2000000009476_2.jpg?v=1765161778&width=480)
![[Pre-owned] K18/K18WG Sapphire Ring S0.96ct D0.45ct 7.3g #9](http://koufuku.jp/cdn/shop/files/2000000037394_2.jpg?v=1765161864&width=480)
![[Pre-owned] K18/PT850 Diamond & Ruby Bracelet D0.35ct 17.0g 19cm](http://koufuku.jp/cdn/shop/files/2000000146195_4.jpg?v=1787902104&width=480)
![[Pre-owned] K18/PT850 RUBY Ruby Ring R0.41ct D0.18ct 5.0g #12](http://koufuku.jp/cdn/shop/files/2000000068473_2.jpg?v=1751698229&width=480)
![[Pre-owned] K18/PT900 Black Opal Pendant Necklace, BO 6.10ct, D 0.73ct, with Sorting, 11.8g](http://koufuku.jp/cdn/shop/files/2000000037424_3.jpg?v=1765161865&width=480)
![[Pre-owned] K18/PT900 Black Opal Ring BO2.37ct D1.13ct 10.2g #9](http://koufuku.jp/cdn/shop/files/2000000058368_2.jpg?v=1763176059&width=480)
![[Pre-owned] K18/PT900 DIAMOND BRACELET D1.84ct 31.3g 16.5cm](http://koufuku.jp/cdn/shop/files/2000000145051_3.jpg?v=1787904343&width=480)
![[Pre-owned] K18/PT900 DIAMOND RING D0.23ct 4.4g #10](http://koufuku.jp/cdn/shop/files/2000000145938_2.jpg?v=1788153626&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)