Showing 1961 products
![[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] K18YG Sapphire Ring S0.89ct S0.30ct D1.20ct 6.4g #13](http://koufuku.jp/cdn/shop/files/2000000035598_2.jpg?v=1765175629&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO1.693ct, D0.75ct, with GGS Sorting, 8.7g, Size 11](http://koufuku.jp/cdn/shop/files/2000000012711_3.jpg?v=1765175628&width=480)
![[Pre-owned] PT900/K18YG SAPPHIRE RING, Sapphire 7.62ct, Diamond 0.718ct, with GRS Certificate, 8.4g, Size 11](http://koufuku.jp/cdn/shop/files/2000000070155_4.jpg?v=1765175628&width=480)
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![[Pre-owned] K18WG Aquamarine Ring AQ3.82ct S1.35ct D0.22ct 8.7g #14](http://koufuku.jp/cdn/shop/files/2000000042756_2.jpg?v=1765175629&width=480)
![[Pre-owned] PT900 Sri Lankan Unheated Sapphire Ring S5.14ct D0.39ct with GIA Report, 6.6g, Size 13](http://koufuku.jp/cdn/shop/files/2000000017204_3.jpg?v=1765175628&width=480)
![[Pre-owned] K18WG Multi-Color Stone Pendant Necklace D0.08ct 3.7g](http://koufuku.jp/cdn/shop/files/2000000106984_2.jpg?v=1765175628&width=480)
![[Pre-owned] K18WG/18KWG Ruby Pendant Necklace, Invisible Setting, R2.60ct, D0.18ct, 7.9g](http://koufuku.jp/cdn/shop/files/2000000099316_2.jpg?v=1765175629&width=480)
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![[Pre-owned] PT900 Star Sapphire Ring SS5.03ct D0.57ct 8.8g #14.5](http://koufuku.jp/cdn/shop/files/2000000089102_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18YG RUBY RING R0.75ct D1.00ct 9.6g #15](http://koufuku.jp/cdn/shop/files/2000000040264_2.jpg?v=1765175628&width=480)
![[Pre-owned] K18YG Diamond Y-shape Pendant Necklace D0.50ct 8.2g](http://koufuku.jp/cdn/shop/files/2000000003207_2.jpg?v=1765175628&width=480)
![[Pre-owned] PT850/PT900 SAPPHIRE Necklace S0.60ct D0.14ct 4.4g](http://koufuku.jp/cdn/shop/files/2000000114200_2.jpg?v=1765175628&width=480)
![[Pre-owned] PT850/PT900 Emerald Pendant Necklace E0.55ct D0.24ct 4.6g](http://koufuku.jp/cdn/shop/files/2000000090160_2.jpg?v=1765163849&width=480)
![[Pre-owned] PT900 Emerald Ring E1.80ct DIAMOND0.71ct 7.3g #12](http://koufuku.jp/cdn/shop/files/2000000077406_2.jpg?v=1765163849&width=480)
![[Pre-owned] PT900 Colombian Emerald Ring, E2.765ct D0.74ct, with GIA Report, 7.9g, #9](http://koufuku.jp/cdn/shop/files/2000000075556_3.jpg?v=1765163849&width=480)
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![[Pre-owned] K18WG Shell Diamond Pendant Necklace D0.27ct 6.3g](http://koufuku.jp/cdn/shop/files/2000000038780_2.jpg?v=1765163849&width=480)
![[Pre-owned] PT950 RUBY RING, Burmese Ruby R3.681ct, D2.33ct, GIA certified, 9.5g, Size #12](http://koufuku.jp/cdn/shop/files/2000000024141_3.jpg?v=1765163849&width=480)
![[Pre-owned] PT900 SAPPHIRE Ring S1.10ct D0.33ct 4.9g #8](http://koufuku.jp/cdn/shop/files/2000000090375_2.jpg?v=1765163848&width=480)
![[Pre-owned] K18WG DIAMOND Necklace D5.10ct 33.4g](http://koufuku.jp/cdn/shop/files/2000000003962_2.jpg?v=1765163849&width=480)
![[Pre-owned] Mitsuo Kaji K18/PT900 Enamel DIAMOND Ring D2.64ct 16.8g #14.5 BOX/Certificate ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000067056_3.jpg?v=1765163849&width=480)
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![[Pre-owned] K18WG/PT900 Ruby Pendant Necklace R0.54ct D0.21ct 3.6g](http://koufuku.jp/cdn/shop/files/2000000014678_2.jpg?v=1765163848&width=480)
![[Pre-owned] Nahoko Omori K18WG Sapphire & Diamond Necklace, S5.18ct D1.10ct, 17.8g](http://koufuku.jp/cdn/shop/files/2000000108285_2.jpg?v=1765163848&width=480)
![[Pre-owned] K18YG RUBY RING R0.51ct D0.64ct 4.2g #16](http://koufuku.jp/cdn/shop/files/2000000116457_2.jpg?v=1765163849&width=480)
![[Pre-owned] PT900 Diamond Ring D0.27ct 5.7g #10](http://koufuku.jp/cdn/shop/files/2000000009193_2.jpg?v=1765163848&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)