Showing 1419 products
![[Used] PT900 Diamond Ring 0.652ct D0.38ct 5.7g #13](http://koufuku.jp/cdn/shop/files/2000000021676_2.jpg?v=1750923953&width=480)
![[Used] PT900 DIAMOND Ring D1.00ct 7.6g #12](http://koufuku.jp/cdn/shop/files/2000000009469_2.jpg?v=1750923953&width=480)
![[Pre-owned] K18WG DIAMOND Ring 0.50ct 3.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000075334_3.jpg?v=1750923953&width=480)
![[Pre-owned] Les Essentiels K18WG Diamond Ring 3.5g #16](http://koufuku.jp/cdn/shop/files/2000000010465_2.jpg?v=1750923953&width=480)
![[Used] PT900 Diamond Ring 0.83ct D1.95ct 9.9g #11](http://koufuku.jp/cdn/shop/files/2000000025650_2.jpg?v=1750923953&width=480)
![[Used] PT900 DIAMOND Ring D1.00ct 4.9g #13](http://koufuku.jp/cdn/shop/files/2000000009629_2.jpg?v=1750923952&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.45ct, D0.61ct, 4.3g, #13](http://koufuku.jp/cdn/shop/files/2000000094359_1.jpg?v=1750923953&width=480)
![[Pre-owned] K18WG DIAMOND Sakura Cut Diamond Ring 0.176cr D0.25ct 5.8g #12](http://koufuku.jp/cdn/shop/files/2000000090429_2.jpg?v=1750923952&width=480)
![[Used] K18WG DIAMOND Ring D0.55ct 5.1g #10.5](http://koufuku.jp/cdn/shop/files/2000000047331_2.jpg?v=1750923953&width=480)
![[Used] K18WG DIAMOND Diamond Ring D0.35ct 2.0g #11](http://koufuku.jp/cdn/shop/files/2000000099309_2.jpg?v=1750923953&width=480)
![[Used] K18WG DIAMOND Ring D0.70ct 3.8g #11.5](http://koufuku.jp/cdn/shop/files/2000000053394_2.jpg?v=1750923953&width=480)
![[Used] PT900 Diamond Ring 0.30ct D0.16ct 4.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000101712_2.jpg?v=1750923952&width=480)
![[Used] K18WG DIAMOND Diamond Ring D1.56ct 6.0g #8](http://koufuku.jp/cdn/shop/files/2000000039084_2.jpg?v=1750923954&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 DIAMOND Diamond Ring 0.55ct D1.50ct 9.6g #13.5](http://koufuku.jp/cdn/shop/files/2000000039336_2.jpg?v=1750923953&width=480)
![[Used] PT900 Diamond Ring 0.31ct 5.0g #10](http://koufuku.jp/cdn/shop/files/2000000018263_2.jpg?v=1750923952&width=480)
![[Pre-owned] K18WG DIAMOND Diamond Full Eternity Ring D3.25ct 4.8g #13](http://koufuku.jp/cdn/shop/files/2000000069326_2.jpg?v=1750472223&width=480)
![[Pre-owned] K18WG CATS EYE Cat's Eye Ring, CE 1.13ct, D 0.21ct, 3.4g, #15](http://koufuku.jp/cdn/shop/files/2000000042725_2.jpg?v=1750472223&width=480)
![[Used] PT900 PEARL White South Sea Pearl Ring, 10.0mm, D0.13ct, 7.7g, #12.5](http://koufuku.jp/cdn/shop/files/2000000094144_2.jpg?v=1750472222&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)
