Showing 1288 products
![[Pre-owned] K18 RUBY Ruby Ring R1.77ct D0.82ct 12.0g #13](http://koufuku.jp/cdn/shop/files/2000000124261_2.jpg?v=1767585974&width=480)
![[Pre-owned] K18 RUBY Ruby Ring R1.83ct D0.25ct 12.1g #10](http://koufuku.jp/cdn/shop/files/2000000124360_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18/K10WG Diamond Pendant Necklace 0.04ct 2.0g](http://koufuku.jp/cdn/shop/files/2000000042374_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18/K18WG DIAMOND Diamond Pendant Necklace D0.10ct 6.2g](http://koufuku.jp/cdn/shop/files/2000000009476_2.jpg?v=1765161778&width=480)
![[Pre-owned] K18/K18WG SAPPHIRE Sapphire Ring, S0.96ct, D0.45ct, 7.3g, #9](http://koufuku.jp/cdn/shop/files/2000000037394_2.jpg?v=1765161864&width=480)
![[Pre-owned] K18/PT850 RUBY Ruby Ring, R0.41ct, D0.18ct, 5.0g, #12](http://koufuku.jp/cdn/shop/files/2000000068473_2.jpg?v=1751698229&width=480)
![[Pre-owned] K18/PT900 BLACK OPAL Black Opal Ring, BO2.37ct, D1.13ct, 10.2g, #9](http://koufuku.jp/cdn/shop/files/2000000058368_2.jpg?v=1763176059&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] K18/PT900 DIAMOND Ring 0.35ct 3.1g #11](http://koufuku.jp/cdn/shop/files/2000000093017_2.jpg?v=1765877331&width=480)
![[Used] K18/PT900 DIAMOND Ring 0.378ct 5.40g #9](http://koufuku.jp/cdn/shop/files/2000000038957_2.jpg?v=1762391102&width=480)
![[Used] K18/PT900 DIAMOND Ring 0.397ct D0.43ct 4.0g #13](http://koufuku.jp/cdn/shop/files/2000000037646_2.jpg?v=1765877450&width=480)
![[Pre-owned] K18/PT900 Emerald Ring, Emerald 0.32ct, D0.12ct, with sorting, 4.8g, #11](http://koufuku.jp/cdn/shop/files/2000000007748_3.jpg?v=1766992784&width=480)
![[Used] K18/PT900 Emerald Ring 3.0g #9](http://koufuku.jp/cdn/shop/files/2000000106250_2.jpg?v=1762391181&width=480)
![[Pre-owned] K18/PT900 Emerald Ring, E1.62ct, D0.67ct, 10.1g, #10.5](http://koufuku.jp/cdn/shop/files/2000000005850_2.jpg?v=1752392528&width=480)
![[Pre-owned] K18/PT900 PEARL RING White Butterfly Pearl Set Ring P11.5mm 15.9g #12](http://koufuku.jp/cdn/shop/files/2000000038711_2.jpg?v=1769398106&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)
![[Pre-owned] K18PG DIAMOND RING Diamond Belt Ring D0.40ct 8.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000121895_2.jpg?v=1768185637&width=480)
![[Used] K18PG DIAMOND RING Diamond Full Eternity Ring D3.04ct 6.7g #12](http://koufuku.jp/cdn/shop/files/2000000069197_2.jpg?v=1768882395&width=480)
![[Used] K18PG DIAMOND RING Diamond Ring D0.05ct 6.4g #16.5](http://koufuku.jp/cdn/shop/files/2000000112466_2.jpg?v=1766221259&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)
