Showing 1961 products
![[Pre-owned] PT900 EMERALD RING E0.97ct D0.78ct 7.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000145969_2.jpg?v=1788772727&width=480)
![[Pre-owned] 750 DIAMOND RING K18PG Diamond Ring D0.68ct 12.4g #17](http://koufuku.jp/cdn/shop/files/2000000147130_2.jpg?v=1788770427&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] 750 DIAMOND RING 18K White Gold Diamond Ring D1.20ct 12.8g Size 12](http://koufuku.jp/cdn/shop/files/2000000143637_2.jpg?v=1788769449&width=480)
![[Pre-owned] PT850 EMERALD RING E0.63ct D0.18ct 5.4g #11](http://koufuku.jp/cdn/shop/files/2000000147482_2.jpg?v=1788768991&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire Ring S1.84ct D1.24ct 6.5g #13](http://koufuku.jp/cdn/shop/files/2000000143910_2.jpg?v=1788157347&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] 750 Sapphire Ring 18K Yellow Gold, 7.3g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000145211_2.jpg?v=1788156757&width=480)
![[Pre-owned] K18PG Pink Sapphire Ring, Invisible Setting, Pink Sapphire PS0.95ct, Diamond D0.28ct, 4.2g, Size #12.5](http://koufuku.jp/cdn/shop/files/2000000147420_2.jpg?v=1788155286&width=480)
![[Pre-owned] PT950 EMERALD RING E1.42ct D0.44 GIA 5.5g #13](http://koufuku.jp/cdn/shop/files/2000000145952_3.jpg?v=1788155042&width=480)
![[Pre-owned] K18YG EMERALD RING E2.45ct D0.55ct 9.9g #13.5](http://koufuku.jp/cdn/shop/files/2000000145891_2.jpg?v=1788154885&width=480)
![[Pre-owned] K18YG DIAMOND RING D2.00ct 12.6g #17](http://koufuku.jp/cdn/shop/files/2000000145020_2.jpg?v=1788154629&width=480)
![[Pre-owned] K18WG/YG No-Heat Ruby Ring, Mozambican Untreated Ruby, R1.00ct D1.99ct, GRS Certified, 6.0g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000140070_4.jpg?v=1788154522&width=480)
![[Pre-owned] PT900 AQUAMARINE RING AQ4.35ct D0.23ct 7.5g #9](http://koufuku.jp/cdn/shop/files/2000000145921_2.jpg?v=1788154109&width=480)
![[Pre-owned] K18/PT900 DIAMOND RING D0.23ct 4.4g #10](http://koufuku.jp/cdn/shop/files/2000000145938_2.jpg?v=1788153626&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] K18YG SAPPHIRE RUBY RING S0.75ct R0.72ct D0.15ct 3.9g #12](http://koufuku.jp/cdn/shop/files/2000000146256_2.jpg?v=1788152266&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)
![[Pre-owned] K18YG RUBY PENDANT TOP R3.21ct D0.09ct 5.3g](http://koufuku.jp/cdn/shop/files/2000000146324_2.jpg?v=1787905452&width=480)
![[Pre-owned] K18WG Diamond Brooch Pendant, D3.15ct, 25.0g](http://koufuku.jp/cdn/shop/files/2000000133065_2.jpg?v=1787905294&width=480)
![[Pre-owned] K18WG/K14WG OPAL DIAMOND BROOCH PENDANT Opal and Diamond Reversible Brooch/Pendant OP33.21ct M5.50 D0.62ct 34.4g](http://koufuku.jp/cdn/shop/files/2000000145075_2.jpg?v=1787905187&width=480)
![[Pre-owned] PT850/K18/PT900 SAPPHIRE NECKLACE Sapphire Pendant Necklace S0.55ct D0.59ct 9.9g 40cm](http://koufuku.jp/cdn/shop/files/2000000130774_2.jpg?v=1787904453&width=480)
![[Pre-owned] K18/PT900 DIAMOND BRACELET D1.84ct 31.3g 16.5cm](http://koufuku.jp/cdn/shop/files/2000000145051_3.jpg?v=1787904343&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] 750 Diamond Necklace Diamond Pendant Necklace D1.60ct 45.4g](http://koufuku.jp/cdn/shop/files/2000000145013_2.jpg?v=1787903641&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)