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![[Used] K18YG RUBY Ruby Ring R1.39ct D0.50ct 5.6g #11](http://koufuku.jp/cdn/shop/files/2000000077437_2.jpg?v=1746252099&width=480)
![[Used] K18YG SAPPHIRE ring 4g #13](http://koufuku.jp/cdn/shop/files/2000000066486_2.jpg?v=1753154502&width=480)
![[Used] K18YG TOURMALINE Pink Tourmaline Ring T1.69ct D0.02ct 5.2g #12](http://koufuku.jp/cdn/shop/files/2000000069968_9.jpg?v=1746249882&width=480)
![[Used] PT900 SPINEL Red Spinel Ring RS2.75ct D0.63ct Central Gem Laboratory Identification 7.7g #12](http://koufuku.jp/cdn/shop/files/2000000069876_3.jpg?v=1746249870&width=480)
![[Used] PT900 RUBY Burmese ruby ring R1.54ct D0.71ct #12 GRS certificate included](http://koufuku.jp/cdn/shop/files/2000000082493_3.jpg?v=1746247300&width=480)
![[Used] TASAKI PT900 AKOYA PEARL Akoya pearl ring 8.1mm D0.09ct 4.8g #11.5](http://koufuku.jp/cdn/shop/files/2000000079158_2.jpg?v=1746180378&width=480)
![[Used] PT900 AKOYA PEARL Akoya pearl ring 8.6mm D0.17ct 5.8g #9.5](http://koufuku.jp/cdn/shop/files/2000000014357_2.jpg?v=1746180305&width=480)
![[Used] TASAKI PT900 Diamond Ring D1.00ct 5.0g #10](http://koufuku.jp/cdn/shop/files/2000000020112_2.jpg?v=1752738669&width=480)
![[Used] GUCCI Ring K18WG Icon 3.6g #12.5](http://koufuku.jp/cdn/shop/files/2000000080147_2.jpg?v=1746173213&width=480)
![[Used] K18WG OPAL Opal Ring 1.06ct 0.08ct 2.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000045535_2.jpg?v=1746161481&width=480)
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KOUFUKU is an e-commerce site that handles a wide range of products, from jewelry and precious metals to brand bags, brand watches, brand apparel, and tableware. In addition to sales, we also offer a purchase service.