Showing 1961 products
![[Pre-owned] K18YG Ruby Ring R0.50ct D0.22ct 3.7g #10.5](http://koufuku.jp/cdn/shop/files/2000000085166_2.jpg?v=1746252612&width=480)
![[Pre-owned] K10YG Ruby Ring D0.10ct 1.3g #9](http://koufuku.jp/cdn/shop/files/2000000071299_2.jpg?v=1746252600&width=480)
![[Pre-owned] K18YG Sapphire Ring S1.00ct D0.94ct 7.0g #14.5](http://koufuku.jp/cdn/shop/files/2000000077444_2.jpg?v=1746252111&width=480)
![[Pre-owned] K18YG 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 S1.01ct D0.57ct 5.3g #8](http://koufuku.jp/cdn/shop/files/2000000069159_2.jpg?v=1746252087&width=480)
![[Pre-owned] K18YG Sapphire Ring S0.25ct D0.44ct 4.8g #11](http://koufuku.jp/cdn/shop/files/2000000071978_2.jpg?v=1750926454&width=480)
![[Used] K18YG SAPPHIRE RING S0.73ct D0.38ct 7.0g #12](http://koufuku.jp/cdn/shop/files/2000000071961_2.jpg?v=1746252065&width=480)
![[Pre-owned] K18YG Sapphire Ring S1.42ct D0.92ct 7.2g #15](http://koufuku.jp/cdn/shop/files/DSC_1999.jpg?v=1775180486&width=480)
![[Pre-owned] K18YG Sapphire Ring S0.46ct D0.46ct 4.1g #9.5](http://koufuku.jp/cdn/shop/files/2000000068718_2.jpg?v=1751002561&width=480)
![[Pre-owned] K18YG Ruby Ring R1.30ct D0.90ct 7.0g #8](http://koufuku.jp/cdn/shop/files/2000000037875_2.jpg?v=1746252009&width=480)
![[Pre-owned] RING K18YG RUBELLITE TOURMALINE Ring 1.69ct D0.02ct 5.2g #12](http://koufuku.jp/cdn/shop/files/2000000069968_9.jpg?v=1746249882&width=480)
![[Pre-owned] PT900 SPINEL Red Spinel Ring, RS2.75ct, D0.63ct, with CGL (Central Gem Laboratory) Appraisal, 7.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069876_3.jpg?v=1746249870&width=480)
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![[Pre-owned] K18YG Ruby Ring R1.18ct D0.27ct 3.8g #5](http://koufuku.jp/cdn/shop/files/2000000043586_2.jpg?v=1746249845&width=480)
![[Pre-owned] PT900 RUBY Ring R0.56ct D0.30ct 5.8g #8](http://koufuku.jp/cdn/shop/files/26640_01.jpg?v=1751706024&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] PT850 Ruby Ring, R0.50ct, D0.16ct, CGL Sorting, 2.6g, Size 12](http://koufuku.jp/cdn/shop/files/9902_01.jpg?v=1751706134&width=480)
![[Pre-owned] PT900 RUBY Ruby Ring R0.20ct D0.86ct 6.7g #11](http://koufuku.jp/cdn/shop/files/2000000011196_2.jpg?v=1746249798&width=480)
![[Pre-owned] HARRY WINSTON PT950 Lotus Cluster Diamond Ring #10.5](http://koufuku.jp/cdn/shop/files/2000000010892_3.jpg?v=1746247967&width=480)
![[Pre-owned] T&Co. Tiffany PT950 Diamond Ring 0.20ct #4.5](http://koufuku.jp/cdn/shop/files/2000000006703_2.jpg?v=1746247757&width=480)
![[Pre-owned] PT900 Burmese Ruby Ring, R1.54ct D0.71ct, Size 12, with GRS Certificate](http://koufuku.jp/cdn/shop/files/2000000082493_3.jpg?v=1746247300&width=480)
![[Pre-owned] PT900 South Sea White Pearl Ring 14.5mm, D0.12ct, 17.5g, Size 11, CGL Sorting Included](http://koufuku.jp/cdn/shop/files/2000000015767_3.jpg?v=1746182933&width=480)
![[Pre-owned] BVLGARI K18WG Akoya Pearl Ring 8.5mm 8.8g #8.5 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000016405_2.jpg?v=1750208020&width=480)
![[Pre-owned] PT900 AKOYA PEARL Ring 8.6mm D0.17ct 5.8g #9.5](http://koufuku.jp/cdn/shop/files/2000000014357_2.jpg?v=1746180305&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)