Showing 1964 products
![[Pre-owned] PT900 EMERALD PENDANT TOP, Emerald Pendant Top, E9.73ct, E1.98ct, D0.16ct, with Sorting, 7.1g](http://koufuku.jp/cdn/shop/files/2000000087368_3.jpg?v=1786337429&width=480)
![[Pre-owned] K18WG Ruby Earrings R5.14ct D0.26ct with Japan Gem Sciences Association Appraisal Report 4.7g](http://koufuku.jp/cdn/shop/files/2000000125718_3.jpg?v=1786337288&width=480)
![[Pre-owned] K18YG EARRINGS Gold Aero-forming Earrings 9.9g](http://koufuku.jp/cdn/shop/files/2000000131689_2.jpg?v=1786337176&width=480)
![[Pre-owned] PT900 DIAMOND BROOCH D1.65ct D0.79ct 13.8g](http://koufuku.jp/cdn/shop/files/2000000133294_2.jpg?v=1786336277&width=480)
![[Pre-owned] PT900 MEXICO OPAL Ring 4.3g #10](http://koufuku.jp/cdn/shop/files/2000000014838_2.jpg?v=1786331455&width=480)
![[Pre-owned] PT900 EMERALD RING E0.96ct D1.46ct 7.4g #14](http://koufuku.jp/cdn/shop/files/2000000126128_2.jpg?v=1785997959&width=480)
![[Pre-owned] PT950 NO-HEAT SAPPHIRE RING Sri Lankan Unheated Sapphire Ring S11.72ct D1.94ct GIA Certified 18.4g #9.5](http://koufuku.jp/cdn/shop/files/2000000019802_4.jpg?v=1785997859&width=480)
![[Pre-owned] PT900 RUBY RING R0.52ct D0.34ct 6.3g #12](http://koufuku.jp/cdn/shop/files/2000000130019_2.jpg?v=1785997750&width=480)
![[Pre-owned] PT900 NO-HEAT RUBY RING, Heart-shaped unheated ruby ring R2.01ct D1.08ct, with GRS/AIGS certificates, 5.7g, size 13.5](http://koufuku.jp/cdn/shop/files/2000000071718_4.jpg?v=1785997642&width=480)
![[Pre-owned] PT950 NO-HEAT COLOR-CHANGING SAPPHIRE RING 16.54ct / Diamond 1.71ct / GRS Certified / 12.0g](http://koufuku.jp/cdn/shop/files/2000000013008_3.jpg?v=1785997562&width=480)
![[Pre-owned] PT900 CATS EYE RING Chrysoberyl Cat's Eye Ring CE3.80ct D1.43ct 12.7g #19.5](http://koufuku.jp/cdn/shop/files/2000000018348_2.jpg?v=1785997208&width=480)
![[Pre-owned] PT900 SPINEL RING SP2.204ct D0.31ct with CGL Sorting, 6.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000125701_3.jpg?v=1785997079&width=480)
![[Pre-owned] PT900 RUBY RING R3.03ct D0.34ct GRS Vivid Red Certificate 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000012001_4.jpg?v=1785996867&width=480)
![[Pre-owned] K18YG MEXICO OPAL RING OP1.08ct D0.13ct 3.7g #13.5](http://koufuku.jp/cdn/shop/files/2000000041018_2.jpg?v=1785996572&width=480)
![[Pre-owned] PT900 NO-HEAT RUBY RING "Pigeon Blood" Mozambique Unheated Ruby Ring R2.01ct D0.76ct with GRS "Pigeon Blood" Certificate, 6.4g, Size 11](http://koufuku.jp/cdn/shop/files/2000000119052_4.jpg?v=1785996291&width=480)
![[Pre-owned] PT900 EMERALD RING E0.21ct D0.13ct 7.0g #12](http://koufuku.jp/cdn/shop/files/2000000124322_2.jpg?v=1785996074&width=480)
![[Pre-owned] PT900 KUNZITE RING Kunzite 12.91ct, Diamond 0.14ct, 16.1g, Size 13](http://koufuku.jp/cdn/shop/files/2000000134567_2.jpg?v=1785995937&width=480)
![[Pre-owned] RING PT900 EMERALD RING E16.83ct D0.84ct CGL Sorting 16.1g #18](http://koufuku.jp/cdn/shop/files/2000000020990_3.jpg?v=1785995483&width=480)
![[Pre-owned] PT900 ALEXANDRITE RING A2.73ct D1.66ct GIA Report 10.7g #13](http://koufuku.jp/cdn/shop/files/2000000143125_3.jpg?v=1785995379&width=480)
![[Pre-owned] PT900 SAPPHIRE RING S1.07ct D0.10ct 5.3g #12](http://koufuku.jp/cdn/shop/files/2000000019482_2.jpg?v=1785995246&width=480)
![[Pre-owned] PT900 AQUAMARINE RING AQ20.33ct D0.56ct CGL Sorting 17.1g #13](http://koufuku.jp/cdn/shop/files/2000000012841_3.jpg?v=1785995142&width=480)
![[Pre-owned] PT900 SAPPHIRE RING Sri Lankan Sapphire Ring S4.95ct D1.51ct with GIA Report, 11.4g, Size 14.5](http://koufuku.jp/cdn/shop/files/2000000068312_3.jpg?v=1785995024&width=480)
![[Pre-owned] PT900 RUBY RING R1.00ct D0.92ct 8.6g #12](http://koufuku.jp/cdn/shop/files/2000000130132_2.jpg?v=1785994912&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)
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)