Showing 1787 products
![[Pre-owned] K18YG/PT900 OPAL RING OP3.18ct D0.07ct 7.0g #12](http://koufuku.jp/cdn/shop/files/2000000037332_2.jpg?v=1768806608&width=480)
![[Used] K18YG/K18WG DIAMOND RING D0.69ct 9.4g #20](http://koufuku.jp/cdn/shop/files/2000000052571_2.jpg?v=1771814805&width=480)
![[Used] K18YG/ONYX YELLOW SAPPHIRE RING YS1.32ct D0.28ct 11.2g #12 #15](http://koufuku.jp/cdn/shop/files/2000000133607_2.jpg?v=1777881348&width=480)
![[Pre-owned] K18YG/PG/WG Diamond Ring, Three-Color Gold Diamond Ring, D0.74ct, 8.0g, Size 12](http://koufuku.jp/cdn/shop/files/2000000038674_2.jpg?v=1771665140&width=480)
![[Pre-owned] K18YG/PG/WG PINK SAPPHIRE RING Three-color Pink Sapphire Ring PS1.25ct D0.30ct 10.9g #10](http://koufuku.jp/cdn/shop/files/2000000094441_2.jpg?v=1771665042&width=480)
![[Used] K18YG/PT900 AKOYA PEARL BROOCH Akoya Pearl Pendant/Brooch P7.8-8.3mm D0.22 29.2g](http://koufuku.jp/cdn/shop/files/2000000041162_2.jpg?v=1768444828&width=480)
![[Pre-owned] K18YG/PT900 DIAMOND RING 0.10ct D0.04ct 8.3g #12.5](http://koufuku.jp/cdn/shop/files/2000000121178_2.jpg?v=1771053915&width=480)
![[Pre-owned] K18YG/PT900 DIAMOND RING D0.03ct 5.4g #14.5](http://koufuku.jp/cdn/shop/files/2000000127095_2.jpg?v=1785994802&width=480)
![[Pre-owned] K18YG/Pt900 DIAMOND RING D0.42ct 16.7g #15](http://koufuku.jp/cdn/shop/files/2000000007045_2.jpg?v=1771665488&width=480)
![[Pre-owned] K18YG/PT900 DIAMOND RING D1.00ct 13.6g #18](http://koufuku.jp/cdn/shop/files/2000000047362_2.jpg?v=1769398106&width=480)
![[Pre-owned] K18YG/PT900 DIAMOND RING D1.00ct 11.8g #13](http://koufuku.jp/cdn/shop/files/2000000124544_2.jpg?v=1767586002&width=480)
![[Pre-owned] K18YG/PT900 EMERALD Ring E0.98ct D0.93ct 11.4g #15](http://koufuku.jp/cdn/shop/files/2000000069609_2.jpg?v=1760678194&width=480)
![[Pre-owned] K18YG/PT900 EMERALD RING E0.60ct D0.38ct with GGS Sorting, 17.2g, Size 15.5](http://koufuku.jp/cdn/shop/files/2000000124933_3.jpg?v=1766801414&width=480)
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![[Pre-owned] K18YG/PT900 MULTI-STONE RING Ruby, Sapphire, Emerald Ring R0.66ct S0.56ct E0.22ct D0.15ct 8.3g #13.5](http://koufuku.jp/cdn/shop/files/2000000123356_2.jpg?v=1768882395&width=480)
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![[Pre-owned] K18YG/PT900 RUBY RING D0.22ct 4.1g #12](http://koufuku.jp/cdn/shop/files/2000000099361_2.jpg?v=1771665041&width=480)
![[Pre-owned] K18YG/PT900 WHITE OPAL Ring OP1.09ct D0.28ct 7.7g #14](http://koufuku.jp/cdn/shop/files/2000000037905_2.jpg?v=1766219054&width=480)
![[Pre-owned] K18YG/PT950 Ruby Ring D0.03ct 2.3g](http://koufuku.jp/cdn/shop/files/2000000099453_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18YG/WG DIAMOND BROOCH 17.5g](http://koufuku.jp/cdn/shop/files/2000000143620_2.jpg?v=1786342646&width=480)
![[Pre-owned] K18YG/WG Mexico Opal Ring OP5.53ct D0.493ct 8.6g #18](http://koufuku.jp/cdn/shop/files/2000000120980_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18YG/WG Ruby Ring D0.42ct 6.8g #13](http://koufuku.jp/cdn/shop/files/2000000121680_2.jpg?v=1767586014&width=480)
![[Pre-owned] K18YG/Plated Amethyst Pearl Necklace 11.7g](http://koufuku.jp/cdn/shop/files/2000000079820_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] K18YG Garnet Ring, G11.42ct, D0.72ct, includes Gem Research Japan sorting, 14.6g, size 14](http://koufuku.jp/cdn/shop/files/2000000073583_2.jpg?v=1745901557&width=480)
![[Pre-owned] 18K WG Burmese Ruby Ring, Ruby 1.19ct, Diamond 0.68ct, with GUILD "Pigeon Blood" Certificate, 5.5g, Size 13](http://koufuku.jp/cdn/shop/files/2000000041575_3.jpg?v=1767586019&width=480)
![[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)