Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] 18K Yellow Gold Star Sapphire Ring, SS 0.543ct, D 0.252ct, 3.0g, #10.5](http://koufuku.jp/cdn/shop/files/2000000115160_2.jpg?v=1762397786&width=480)
![[Used] 18K Yellow Gold Emerald Ring, E0.34ct, D1.16ct, 9.7g, #15](http://koufuku.jp/cdn/shop/files/2000000069678_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18K White Gold Ruby Bracelet, R7.78ct, D0.45ct, 16.1g, 16.5cm](http://koufuku.jp/cdn/shop/files/2000000093697_2.jpg?v=1762397785&width=480)
![[Used] K18WG Emerald Ring E1.00ct D0.38ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000045627_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18K Yellow Gold Star Sapphire Pendant Necklace 15.0g](http://koufuku.jp/cdn/shop/files/2000000024523_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG RUBY Ruby & Diamond Ring R0.50ct D0.50ct 5.6g #10](http://koufuku.jp/cdn/shop/files/2000000105567_2.jpg?v=1762397786&width=480)
![[Used] PT900 Emerald Ring E1.293ct D0.71ct 5.7g #9](http://koufuku.jp/cdn/shop/files/2000000018256_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG TOURMALINE Green Tourmaline Ring, T13.679ct, D1.30ct, 9.5g, #14](http://koufuku.jp/cdn/shop/files/2000000092706_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG RUBELLITE TOURMALINE Rubellite (Red Tourmaline) Ring, T6.65ct, D1.15ct, 7.6g, #13](http://koufuku.jp/cdn/shop/files/2000000115061_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.68ct, D 0.37ct, 7.4g, #12](http://koufuku.jp/cdn/shop/files/2000000108919_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring 1.00ct D0.11ct 5.8g #12](http://koufuku.jp/cdn/shop/files/2000000108933_2.jpg?v=1762397786&width=480)
![[Used] 18KWG MEXICO OPAL Handmade Mexican Opal Ring, 8.0g #9](http://koufuku.jp/cdn/shop/files/2000000056975_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Akoya Pearl Ring, P7.0mm, D0.25ct, 5.0g, #10.5](http://koufuku.jp/cdn/shop/files/2000000106236_2.jpg?v=1762397786&width=480)
![[Pre-owned] PT850/PT900 Diamond Pendant Necklace 0.519ct D0.094ct 7.5g](http://koufuku.jp/cdn/shop/files/2000000018492_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT950 Pink Sapphire Ring, PS3.83ct, D0.80ct, Sorting 5.4g, #12](http://koufuku.jp/cdn/shop/files/2000000001265_3.jpg?v=1763175991&width=480)
![[Pre-owned] K18WG Multi Ruby and Sapphire Pendant Necklace D0.45ct 6.5g](http://koufuku.jp/cdn/shop/files/2000000002705_3.jpg?v=1763176127&width=480)
![[Pre-owned] 18K Yellow Gold Opal Pendant Necklace, D0.30ct, 12.9g](http://koufuku.jp/cdn/shop/files/2000000077093_3.jpg?v=1763176155&width=480)
![[Pre-owned] PT900 BLACK OPAL Black Opal Ring, BO 5.43ct, D 1.17ct, 10.4g, #14.5](http://koufuku.jp/cdn/shop/files/2000000019758_2.jpg?v=1763175991&width=480)
![[Used] PT900 DIAMOND Ring D0.31ct 5.3g #12](http://koufuku.jp/cdn/shop/files/2000000009438_2.jpg?v=1763175991&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)
