Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] K18WG Emerald Ring E6.03ct D0.60ct 4.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000038827_2.jpg?v=1762391101&width=480)
![[Used] 18K Yellow Gold/Plated Amethyst and Pearl Necklace, 11.7g](http://koufuku.jp/cdn/shop/files/2000000079820_2.jpg?v=1762391103&width=480)
![[Pre-owned] K18WG Jadeite Jadeite Ring J3.56ct D0.48ct 6.2g #15.5](http://koufuku.jp/cdn/shop/files/2000000044125_2.jpg?v=1762391104&width=480)
![[Pre-owned] K18WG Jadeite Jadeite Ring, J11.99ct, D0.37ct, 7.4g, #12.5](http://koufuku.jp/cdn/shop/files/2000000034577_2.jpg?v=1762391104&width=480)
![[Used] K18WG Emerald Ring E4.39ct D0.70ct 5.9g #14](http://koufuku.jp/cdn/shop/files/2000000042145_2.jpg?v=1762391103&width=480)
![[Used] PT900 SAPPHIRE Sapphire Ring, S1.68ct, D0.65ct, 8.6g, #8](http://koufuku.jp/cdn/shop/files/2000000090573_2.jpg?v=1762391121&width=480)
![[Pre-owned] Kunio Nakajima PT850/PT900I Pate de Verre Pendant Necklace G0.37ct 38.8g](http://koufuku.jp/cdn/shop/files/2000000017860_2.jpg?v=1762391121&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.21ct, D 0.16ct, 4.4g, #12.5](http://koufuku.jp/cdn/shop/files/2000000106687_2.jpg?v=1762391138&width=480)
![[Used] K18/PT900 DIAMOND Ring D0.40ct 7.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000106625_2.jpg?v=1762391138&width=480)
![[Used] PT900 PEARL White Butterfly Pearl Ring, 10.3mm, D0.19ct, 7.0g, #14](http://koufuku.jp/cdn/shop/files/2000000106816_2.jpg?v=1762391138&width=480)
![[Used] K18YG Emerald Ring E0.77ct D0.81ct 7.1g #13](http://koufuku.jp/cdn/shop/files/2000000053134_2.jpg?v=1762391139&width=480)
![[Used] K18YG RUBY Ruby Ring D0.19ct 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000026633_2.jpg?v=1762391138&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.43ct, D 0.18ct, 5.1g, #12](http://koufuku.jp/cdn/shop/files/2000000112503_2.jpg?v=1762391139&width=480)
![[Used] I-PRIMO PT950 DIAMOND Ring 0.264ct 3.0g](http://koufuku.jp/cdn/shop/files/2000000089119_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring, E2.50ct, D0.44ct, 4.3g, #13.5](http://koufuku.jp/cdn/shop/files/2000000045313_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring, E2.10ct, D0.16ct, 2.8g, #13](http://koufuku.jp/cdn/shop/files/2000000036298_2.jpg?v=1762391139&width=480)
![[Pre-owned] K18WG Emerald Ring, E1.00ct, D0.30ct, 3.2g, #10.5](http://koufuku.jp/cdn/shop/files/2000000036441_2.jpg?v=1762391139&width=480)
KOUFUKU is an e-commerce site that handles a wide range of products, from jewelry and precious metals to brand bags, brand watches, brand apparel, and tableware. In addition to sales, we also offer a purchase service.
![[Pre-owned] K18WG SPINEL Pink Spinel Ring SP 0.50ct D 0.17ct 2.8g #13](http://koufuku.jp/cdn/shop/files/2000000115443_2.jpg?v=1762391139&width=480)
![[Used] PT900 Lavender Jadeite Ring, D0.60ct, 8.3g, #10.5](http://koufuku.jp/cdn/shop/files/2000000115726_2.jpg?v=1762391139&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.31ct, D 0.80ct, 5.3g, #11.5](http://koufuku.jp/cdn/shop/files/2000000106977_2.jpg?v=1762391139&width=480)
![[Used] PT900 SAPPHIRE RING Sapphire Ring S2.57ct D1.51ct 14.3g #15](http://koufuku.jp/cdn/shop/files/2000000071954_2.jpg?v=1768882396&width=480)
![[Pre-owned] MIKIMOTO PT950 ALEXANDRITE RING, A 0.42ct, D 0.62ct, 6.1g, #15, ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000123844_3.jpg?v=1768882396&width=480)
