Showing 1787 products
![[Pre-owned] K18/PT900 DIAMOND RING D1.01ct 9.8g #20](http://koufuku.jp/cdn/shop/files/2000000014203_2.jpg?v=1771665152&width=480)
![[Pre-owned] K18/PT900 DIAMOND Ring D0.40ct 7.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000106625_2.jpg?v=1762391138&width=480)
![[Pre-owned] K18/PT900 Diamond Ring 0.35ct 3.1g #11](http://koufuku.jp/cdn/shop/files/2000000093017_2.jpg?v=1765877331&width=480)
![[Pre-owned] K18/PT900 Diamond Ring 0.378ct 5.40g #9](http://koufuku.jp/cdn/shop/files/2000000038957_2.jpg?v=1762391102&width=480)
![[Pre-owned] K18/PT900 Diamond Ring 0.397ct D0.43ct 4.0g #13](http://koufuku.jp/cdn/shop/files/2000000037646_2.jpg?v=1765877450&width=480)
![[Pre-owned] K18/PT900 EMERALD RING E0.31ct 3.6g #11.5](http://koufuku.jp/cdn/shop/files/2000000146027_2.jpg?v=1789103331&width=480)
![[Pre-owned] K18/PT900 EMERALD RING E0.32ct D0.12ct with Sorting, 4.8g, Size 11](http://koufuku.jp/cdn/shop/files/2000000007748_3.jpg?v=1766992784&width=480)
![[Pre-owned] K18/PT900 Emerald Ring E1.62ct D0.67ct 10.1g #10.5](http://koufuku.jp/cdn/shop/files/2000000005850_2.jpg?v=1752392528&width=480)
![[Pre-owned] K18/PT900 GARNET RING D0.20 8.9g #13](http://koufuku.jp/cdn/shop/files/2000000131573_2.jpg?v=1771658255&width=480)
![[Pre-owned] K18/PT900 PEARL RING White South Sea Pearl Set Ring P11.5mm 15.9g #12](http://koufuku.jp/cdn/shop/files/2000000038711_2.jpg?v=1769398106&width=480)
![[Pre-owned] K18/PT900 RUBY RING R0.31ct D0.13ct 5.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000145860_2.jpg?v=1788157115&width=480)
![[Pre-owned] K18/PT900 RUBY RING R0.55ct D0.15ct with Appraisal Report 8.1g #11](http://koufuku.jp/cdn/shop/files/2000000120645_3.jpg?v=1768185641&width=480)
![[Pre-owned] K18/PT900 SAPPHIRE RUBY Pendant S1.50ct R2.00ct D0.06ct 18.7g](http://koufuku.jp/cdn/shop/files/2000000114422_2.jpg?v=1768444653&width=480)
![[Pre-owned] K18/PT900 SAPPHIRE RING S0.36ct D0.10ct 9.6g #14](http://koufuku.jp/cdn/shop/files/2000000146263_2.jpg?v=1788770167&width=480)
![[Pre-owned] K18/PT900 SAPPHIRE RING S1.80ct D0.16ct 13.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000108568_2.jpg?v=1771665487&width=480)
![[Used] K18/PT900 SPHENE RING Sphene Ring 2.33ct D0.25ct 10.9g #13](http://koufuku.jp/cdn/shop/files/2000000121918_2.jpg?v=1771814674&width=480)
![[Pre-owned] K18/PT900 TAHITIAN PEARL PENDANT NECKLACE Reversible Black Pearl Pendant Necklace P14.5mm D0.10ct 11.6g](http://koufuku.jp/cdn/shop/files/2000000125565_2.jpg?v=1771658188&width=480)
![[Used] K18/PT900 TANZANITE RING Tanzanite Ring T1.43ct D0.41ct 15.0g #14.5](http://koufuku.jp/cdn/shop/files/2000000133614_2.jpg?v=1778494149&width=480)
![[Used] K18/PT950 PAPARACIA SAPPHIRE NECKLACE Paparadscha Sapphire Pendant Necklace 1.60ct D0.19ct with Japan Germany Gemological Institute certificate 3.9g](http://koufuku.jp/cdn/shop/files/2000000074689_3.jpg?v=1765175629&width=480)
![[Pre-owned] K18PG Amethyst & Green Garnet Ring, Amethyst 9.85ct, Green Garnet 0.18ct, with Appraisal Certificate, 8.0g, Size 17](http://koufuku.jp/cdn/shop/files/2000000145228_3.jpg?v=1788153379&width=480)
![[Pre-owned] K18PG DIAMOND RING Diamond Belt Ring D0.40ct 8.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000121895_2.jpg?v=1768185637&width=480)
![[Pre-owned] K18PG Diamond Full Eternity Ring, D3.04ct, 6.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069197_2.jpg?v=1768882395&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] K18PG Diamond Men's Eternity Ring D1.23ct 7.8g #28](http://koufuku.jp/cdn/shop/files/2000000044064_2.jpg?v=1771658188&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)