Gems, Jewelry and Precious Metals
Showing 1386 products
![[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] 18K Yellow Gold Ruby and Diamond Ring, R 0.79ct, D 0.13ct, 3.5g, #10](http://koufuku.jp/cdn/shop/files/2000000126289_2.jpg?v=1767585980&width=480)
![[Used] PT900 RUBY RING Ruby Ring R0.81ct Dia 7.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000098654_2.jpg?v=1767585984&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE Star Sapphire Ring, SS8.26ct, D0.50ct, 6.6g, #14](http://koufuku.jp/cdn/shop/files/2000000082981_2.jpg?v=1767585988&width=480)
![[Used] K18WG Emerald Ring E1.40ct D0.70ct 3.5g #16](http://koufuku.jp/cdn/shop/files/2000000036182_2.jpg?v=1767585991&width=480)
![[Used] PT900 Emerald Ring, E1.60ct, D0.72ct, 7.8g, #15](http://koufuku.jp/cdn/shop/files/2000000125930_2.jpg?v=1767585991&width=480)
![[Used] K18WG Emerald Ring E2.28ct D0.14ct 3.2g #13](http://koufuku.jp/cdn/shop/files/2000000045504_2.jpg?v=1767585991&width=480)
![[Used] PT900 Emerald Ring, E0.48ct, D0.94ct, 12.9g, #18](http://koufuku.jp/cdn/shop/files/2000000065267_2.jpg?v=1767585991&width=480)
![[Pre-owned] K18WG Emerald Ring, E1.18ct, D0.65ct, 4.3g, #11.5](http://koufuku.jp/cdn/shop/files/2000000069746_2.jpg?v=1767585991&width=480)
![[Used] PT900 Emerald Ring, E2.66ct, D0.55ct, 8.1g, #14](http://koufuku.jp/cdn/shop/files/2000000122038_2.jpg?v=1767585991&width=480)
![[Pre-owned] 18K Yellow Gold Emerald Ring, E2.57ct, D0.70ct, 7.3g, #11.5](http://koufuku.jp/cdn/shop/files/2000000040233_2.jpg?v=1767585996&width=480)
![[Used] K18WG Emerald Ring E0.921ct D0.15ct 2.5g #13](http://koufuku.jp/cdn/shop/files/2000000045290_2.jpg?v=1767585997&width=480)
![[Pre-owned] 18K Yellow Gold Diamond Ring, 1.01ct, D0.79ct, 5.7g, #10](http://koufuku.jp/cdn/shop/files/2000000125510_2.jpg?v=1767585997&width=480)
![[Used] PT900 DIAMOND V-Line Ring, D0.90ct, 5.6g, #12](http://koufuku.jp/cdn/shop/files/2000000048871_2.jpg?v=1767586001&width=480)
![[Pre-owned] K18YG Diamond Ring Cat RING 5.1g #12.5](http://koufuku.jp/cdn/shop/files/2000000124483_2.jpg?v=1767586001&width=480)
![[Pre-owned] K18WG/K18YG Colorless & Yellow Diamond Ring 14.6g #14](http://koufuku.jp/cdn/shop/files/2000000070018_2.jpg?v=1767586001&width=480)
![[Used] PT900 DIAMOND Ring D0.75ct 6.0g #15](http://koufuku.jp/cdn/shop/files/2000000107028_2.jpg?v=1767586001&width=480)
![[Used] K18YG/PT900 DIAMOND RING D1.00ct 11.8g #13](http://koufuku.jp/cdn/shop/files/2000000124544_2.jpg?v=1767586002&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)
