Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] K18YG Akoya Pearl Ring, 6.9mm, D0.48ct, 5.9g](http://koufuku.jp/cdn/shop/files/2000000115146_2.jpg?v=1762391140&width=480)
![[Used] KABANA K18YG TURQUOISE Turquoise Ring 16.5g ONE PRICE 20](http://koufuku.jp/cdn/shop/files/2000000105222_2.jpg?v=1762391161&width=480)
![[Used] 18K Yellow Gold Emerald Ring with Diamond, 7.6g, #13](http://koufuku.jp/cdn/shop/files/2000000064086_2.jpg?v=1762391161&width=480)
![[Used] K18WG Emerald Ring E1.70ct D0.18ct 2.9g #13](http://koufuku.jp/cdn/shop/files/2000000041858_2.jpg?v=1762391160&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R1.48ct, D1.18ct, 8.5g, #11.5](http://koufuku.jp/cdn/shop/files/2000000115450_2.jpg?v=1762391162&width=480)
![[Used] BRINKHAUS 18K/PT DIAMOND Ring 11.4g #16 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000028026_2.jpg?v=1762391160&width=480)
![[Used] K18YG RUBY Ruby Ring R2.80ct D0.11ct NGL Certificate of Authenticity 7.2g #15](http://koufuku.jp/cdn/shop/files/2000000115467_3.jpg?v=1762391161&width=480)
![[Pre-owned] K18WG Jadeite Jadeite Ring J10.45ct D0.36ct 6.6g #13](http://koufuku.jp/cdn/shop/files/2000000034263_2.jpg?v=1762391162&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R1.63ct, D0.32ct, 5.5g, #13.5](http://koufuku.jp/cdn/shop/files/2000000041063_2.jpg?v=1762391161&width=480)
![[Used] PT850 SAPPHIRE Golden Sapphire Ring, GS2.34ct, D0.55ct, 4.7g, #15](http://koufuku.jp/cdn/shop/files/2000000108537_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.25ct, D1.19ct, 5.5g, #14](http://koufuku.jp/cdn/shop/files/2000000044194_2.jpg?v=1762391161&width=480)
![[Pre-owned] K18WG Tanzanite Ring, T2.52ct, D0.63ct, 3.6g, #13](http://koufuku.jp/cdn/shop/files/2000000027340_2.jpg?v=1762391163&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R1.43ct, D0.75ct, 7.4g, #11.5](http://koufuku.jp/cdn/shop/files/2000000010946_2.jpg?v=1762391162&width=480)
![[Used] PT900 Jadeite Jadeite Ring J1.83ct D0.44ct 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000106076_2.jpg?v=1762391161&width=480)
![[Used] K18PG DIAMOND Diamond Ring D1.60ct 5.9g #12](http://koufuku.jp/cdn/shop/files/DSC_3934.jpg?v=1769670729&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] 18K Yellow Gold Ruby Ring, R 0.27ct, D 0.08ct, 2.4g, #8](http://koufuku.jp/cdn/shop/files/2000000105581_2.jpg?v=1762391160&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.62ct, D 0.05ct, 2.0g, #6.5](http://koufuku.jp/cdn/shop/files/2000000105598_2.jpg?v=1762391161&width=480)
![[Pre-owned] 18K Yellow Gold Emerald & Sapphire Ring, E2.30ct, S0.28ct, D0.14ct, 8.0g, #8](http://koufuku.jp/cdn/shop/files/2000000071091_2.jpg?v=1762391161&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R4.17ct, D0.24ct, 6.5g, #13](http://koufuku.jp/cdn/shop/files/2000000016276_2.jpg?v=1762391163&width=480)
![[Used] PT900 Tanzanite Ring, T24.61ct, D0.66ct, 15.0g, #13](http://koufuku.jp/cdn/shop/files/2000000020037_2.jpg?v=1762391162&width=480)
![[Pre-owned] K18/PT900 RUBY Ruby Ring, R0.42ct, D0.06ct, 4.1g, #11](http://koufuku.jp/cdn/shop/files/2000000106151_2.jpg?v=1762391162&width=480)
![[Used] PT900 TOURMALINE Green Tourmaline Ring, T3.20ct, D0.20ct, 9.4g, #14.5](http://koufuku.jp/cdn/shop/files/2000000106304_2.jpg?v=1762391176&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)
