Gems, Jewelry, and Precious Metals
Showing 1929 products
![[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] 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] 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] 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] 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] 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] 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] 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] 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] 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 K18PG Diamond Ring D0.68ct 12.4g #17](http://koufuku.jp/cdn/shop/files/2000000147130_2.jpg?v=1788770427&width=480)
![[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] PT900 EMERALD RING E0.96ct D0.73ct 6.8g #7](http://koufuku.jp/cdn/shop/files/2000000146041_2.jpg?v=1788773467&width=480)
![[Pre-owned] PT900 EMERALD RING E3.03ct D1.01ct 8.9g #10](http://koufuku.jp/cdn/shop/files/2000000146362_2.jpg?v=1789028971&width=480)
![[Pre-owned] K18YG DIAMOND RING Diamond Reversible Heart Charm Ring D0.32ct 5.4g #12](http://koufuku.jp/cdn/shop/files/2000000145914_2.jpg?v=1789029129&width=480)
![[Pre-owned] PT900 DIAMOND RING D2.00ct 6.4g #9](http://koufuku.jp/cdn/shop/files/2000000146287_2.jpg?v=1789030046&width=480)
![[Pre-owned] PT950 DIAMOND RING D1.00ct 3.1g #14](http://koufuku.jp/cdn/shop/files/2000000145877_2.jpg?v=1789032227&width=480)
![[Pre-owned] 750 Diamond Ring K18PG Diamond Ring 2.5g #11.5](http://koufuku.jp/cdn/shop/files/2000000147307_2.jpg?v=1789032572&width=480)
![[Pre-owned] PT900 DIAMOND RING Diamond Solitaire Ring 0.263ct 3.0g #9](http://koufuku.jp/cdn/shop/files/2000000112619_2.jpg?v=1789032859&width=480)
![[Pre-owned] PT850/K18 DIAMOND RING 0.529ct 3.8g #18.5](http://koufuku.jp/cdn/shop/files/2000000113968_2.jpg?v=1789033272&width=480)
![[Pre-owned] MARIO BUCCELLATI 18K Yellow Gold Sapphire Ring 0.80ct 7.9g Size 5.5 (US) ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000096087_2.jpg?v=1789033407&width=480)
![[Pre-owned] PT900 DIAMOND RING D2.00ct 20.0g #9.5](http://koufuku.jp/cdn/shop/files/2000000145037_2.jpg?v=1789034234&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] K18WG Grossular Garnet Ring 1.20ct D0.34ct with Sorting 6.6g](http://koufuku.jp/cdn/shop/files/2000000140902_3.jpg?v=1789034374&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire Ring S5.06ct D0.78ct 6.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000050447_2.jpg?v=1789034504&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)