Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] PT900 DIAMOND Ring D0.15ct 4.5g #8](http://koufuku.jp/cdn/shop/files/2000000033600_2.jpg?v=1765877331&width=480)
![[Pre-owned] K18WG GOLDEN PEARL White Butterfly Pearl Ring, 11.5mm, D0.95ct, S0.08ct, 8.0g, #12](http://koufuku.jp/cdn/shop/files/2000000044477_2.jpg?v=1765877331&width=480)
![[Pre-owned] 18K Yellow Gold Mabe Pearl Ring, 13.5mm, 4.1g, #10.5](http://koufuku.jp/cdn/shop/files/2000000048017_2.jpg?v=1765877332&width=480)
![[Used] K18WG DIAMOND Diamond Ring D0.45ct 5.4g #12](http://koufuku.jp/cdn/shop/files/2000000053318_2.jpg?v=1765877332&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S0.87ct, D0.04ct, 1.6g, #11.5](http://koufuku.jp/cdn/shop/files/2000000036427_2.jpg?v=1765877331&width=480)
![[Used] PT900 MEXICO OPAL Mexican Opal Ring 4.45ct 6.7g #11](http://koufuku.jp/cdn/shop/files/2000000005591_2.jpg?v=1765877332&width=480)
![[Pre-owned] K18YG/PT900 Diamond Ring MQ0.17ct D0.24ct 11.5g #16](http://koufuku.jp/cdn/shop/files/2000000124728_2.jpg?v=1765877332&width=480)
![[Used] PT900 Jadeite Jadeite Ring, J2.16ct, D0.43ct, Sorting, 5.7g, #10](http://koufuku.jp/cdn/shop/files/2000000021867_3.jpg?v=1765877331&width=480)
![[Used] K18WG DIAMOND Ring D0.46ct 5.7g #14](http://koufuku.jp/cdn/shop/files/2000000053493_2.jpg?v=1765877332&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.88ct, D0.17ct, 2.8g, #13.5](http://koufuku.jp/cdn/shop/files/2000000045306_2.jpg?v=1765877332&width=480)
![[Pre-owned] K18WG RUBELLITE TOURMALINE (Red Tourmaline) Ring, T23.55ct, D0.70ct, 16.0g, #14](http://koufuku.jp/cdn/shop/files/2000000039169_2.jpg?v=1765877332&width=480)
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![[Used] PT900 Emerald Ring Emerald 1.00ct D0.12ct 5.6g #9](http://koufuku.jp/cdn/shop/files/2000000018805_2.jpg?v=1765877332&width=480)
![[Used] 18K Yellow Gold Diamond Ring, 1.04ct, 0.53ct, 7.7g, #11.5](http://koufuku.jp/cdn/shop/files/2000000073606_2.jpg?v=1765877332&width=480)
![[Used] PT900 SAPPHIRE Unheated Sapphire Ring, S2.823ct, D0.33ct, Sorting, 7.1g, #16](http://koufuku.jp/cdn/shop/files/2000000024349_3.jpg?v=1765877332&width=480)
![[Used] K18YG CORAL Ring D0.04ct 9.6g #20](http://koufuku.jp/cdn/shop/files/2000000105161_2.jpg?v=1765877351&width=480)
![[Used] K18YG DIAMOND Ring 0.38ct 2.7g #9.5](http://koufuku.jp/cdn/shop/files/2000000007984_2.jpg?v=1765877352&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 RUBY Ruby Ring, R1.03ct, D0.39ct, CGL Sorting, 5.4g, #12](http://koufuku.jp/cdn/shop/files/2000000126043_3.jpg?v=1765877429&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)
