Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] K18WG Emerald Cat's Eye Ring, EC0.68ct, D0.33ct, 3.5g, #13.5](http://koufuku.jp/cdn/shop/files/2000000003016_2.jpg?v=1764830345&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.96ct, D 0.70ct, 6.7g, #12](http://koufuku.jp/cdn/shop/files/2000000040110_2.jpg?v=1764915891&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.65ct, D 0.80ct, 7.5g, #10](http://koufuku.jp/cdn/shop/files/2000000117508_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18WG RUBY Unheated Ruby Necklace 1.05ct D0.52c "Pigeon Blood" AIGS Certificate 3.2g](http://koufuku.jp/cdn/shop/files/2000000050805_4.jpg?v=1764915891&width=480)
![[Used] K18YG/PT950 RUBY Ruby Ring D0.03ct 2.3g](http://koufuku.jp/cdn/shop/files/2000000099453_2.jpg?v=1764915892&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.68ct, D 0.28ct, 5.7g, #9.5](http://koufuku.jp/cdn/shop/files/2000000105574_2.jpg?v=1764915892&width=480)
![[Pre-owned] CHAUMET Hortensia 18K White Gold Opal Pendant Necklace, 3.9g](http://koufuku.jp/cdn/shop/files/2000000027616_2.jpg?v=1764915891&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.61ct, D 0.38ct, 6.3g, #8](http://koufuku.jp/cdn/shop/files/2000000052793_2.jpg?v=1764915892&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 0.45ct R, 0.33ct D, 7.6g, #14](http://koufuku.jp/cdn/shop/files/2000000116488_2.jpg?v=1764915892&width=480)
![[Used] PT900 DIAMOND V-shaped ring D0.80ct 4g #11](http://koufuku.jp/cdn/shop/files/2000000010021_2.jpg?v=1765012877&width=480)
![[Pre-owned] PT850 BLACK OPAL Black Opal Pendant Necklace 2.72ct D0.51ct 8.3g](http://koufuku.jp/cdn/shop/files/2000000058566_2.jpg?v=1765012877&width=480)
![[Pre-owned] MIKIMOTO K18YG DIAMOND Pendant Necklace 0.11ct 2.3g One Price](http://koufuku.jp/cdn/shop/files/2000000028453_2.jpg?v=1765012877&width=480)
![[Pre-owned] HOSEHESS K18WG DIAMOND Pendant Necklace D2.08ct 12.9g ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000072548_2.jpg?v=1765012877&width=480)
![[Used] K18YG GARNET Ring G1.26ct D0.61ct 6.7g #17.5](http://koufuku.jp/cdn/shop/files/2000000071763_2.jpg?v=1765012878&width=480)
![[Used] PT900 Garnet Ring G2.01ct D0.25ct 9.1g #10](http://koufuku.jp/cdn/shop/files/2000000006697_2.jpg?v=1765012877&width=480)
![[Used] K18YG Amethyst Ring D0.04ct 5.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000114309_2.jpg?v=1765012878&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.
![[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)
