Showing 1961 products
![[Pre-owned] PT900 Black Opal Ring, BO3.29ct D0.67ct, CGL Sorting included, 8.7g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000014845_3.jpg?v=1763175990&width=480)
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![[Pre-owned] K18YG OPAL Pendant Necklace D0.30ct 12.9g](http://koufuku.jp/cdn/shop/files/2000000077093_3.jpg?v=1763176155&width=480)
![[Pre-owned] K18WG Multi-Gem Ruby/Sapphire Pendant Necklace D0.45ct 6.5g](http://koufuku.jp/cdn/shop/files/2000000002705_3.jpg?v=1763176127&width=480)
![[Pre-owned] PT850/PT900 Diamond Pendant Necklace, 0.519ct, D0.094ct, 7.5g](http://koufuku.jp/cdn/shop/files/2000000018492_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT950 Pink Sapphire Ring PS3.83ct D0.80ct With Sorting 5.4g #12](http://koufuku.jp/cdn/shop/files/2000000001265_3.jpg?v=1763175991&width=480)
![[Pre-owned] K18YG AKOYA PEARL Ring P7.0mm D0.25ct 5.0g #10.5](http://koufuku.jp/cdn/shop/files/2000000106236_2.jpg?v=1762397786&width=480)
![[Pre-owned] PT900 Mozambican Unheated Ruby Ring 2.00ct, with GRS Certificate, 4.9g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000115788_3.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Ruby Ring R0.68ct D0.37ct 7.4g #12](http://koufuku.jp/cdn/shop/files/2000000108919_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Sapphire Ring 1.00ct D0.11ct 5.8g #12](http://koufuku.jp/cdn/shop/files/2000000108933_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG Rubellite Tourmaline Ring T6.65ct D1.15ct 7.6g #13](http://koufuku.jp/cdn/shop/files/2000000115061_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18KWG Mexico Opal Ring, Handmade, 8.0g, Size 9](http://koufuku.jp/cdn/shop/files/2000000056975_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG Green Tourmaline Ring, T13.679ct, D1.30ct, 9.5g, Size #14](http://koufuku.jp/cdn/shop/files/2000000092706_2.jpg?v=1762397786&width=480)
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![[Pre-owned] PT900 Emerald Ring, E1.293ct, D0.71ct, 5.7g, #9](http://koufuku.jp/cdn/shop/files/2000000018256_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG/PT900 Semi-Black Opal Pendant Necklace, BO2.18ct D0.17ct 4.4g](http://koufuku.jp/cdn/shop/files/2000000082851_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R0.50ct D0.50ct 5.6g #10](http://koufuku.jp/cdn/shop/files/2000000105567_2.jpg?v=1762397786&width=480)
![Used] K18YG STAR SAPPHIRE PENDANT NECKLACE 15.0g](http://koufuku.jp/cdn/shop/files/2000000024523_2.jpg?v=1762397786&width=480)
![[Used] K18WG Ruby Bracelet R7.78ct D0.45ct 16.1g 16.5cm](http://koufuku.jp/cdn/shop/files/2000000093697_2.jpg?v=1762397785&width=480)
![[Pre-owned] PT850/PT900 ALEXANDRITE Pendant Necklace A1.132ct D0.59ct with Identification Report, 3.9g](http://koufuku.jp/cdn/shop/files/2000000017631_2.jpg?v=1762397786&width=480)
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![[Pre-owned] K18WG Emerald Ring E1.00ct D0.38ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000045627_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Emerald Ring E0.34ct D1.16ct 9.7g #15](http://koufuku.jp/cdn/shop/files/2000000069678_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Star Sapphire Ring SS0.543ct D0.252ct 3.0g #10.5](http://koufuku.jp/cdn/shop/files/2000000115160_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG Colombian Emerald Ring, E0.63ct D0.63ct, with GRS Certificate, 3.8g, Size #14](http://koufuku.jp/cdn/shop/files/2000000039206_4.jpg?v=1762397786&width=480)
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![Used] PT850/PT900 EMERALD PENDANT NECKLACE E3.83ct D1.32ct 16.0g](http://koufuku.jp/cdn/shop/files/2000000074474_2.jpg?v=1762397786&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)