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![[Pre-owned] K18YG GOLDEN PEARL RING Golden Pearl Ring P11.3mm D0.44ct 10.5g #13](http://koufuku.jp/cdn/shop/files/2000000130217_2.jpg?v=1771658187&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)
![[Used] K18YG Akoya Pearl Ring, P6.4-8.4mm, D0.60ct, 25.2g](http://koufuku.jp/cdn/shop/files/2000000127293_2.jpg?v=1768808620&width=480)
![[Used] K18YG PEARL RING Pearl Ring P9.2mm P9.2mm D 1.13ct 10.8g #16](http://koufuku.jp/cdn/shop/files/2000000031095_2.jpg?v=1768806608&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE RING Star Sapphire Ring SS4.90ct D0.55ct 5.8g #14](http://koufuku.jp/cdn/shop/files/2000000039565_2.jpg?v=1768800609&width=480)
![[Pre-owned] 18K White Gold Boulder Opal Ring, OP 4.09ct, D 0.51ct, 6.7g, #13](http://koufuku.jp/cdn/shop/files/2000000070650_2.jpg?v=1768800609&width=480)
![[Pre-owned] K18YG LAZURITE RING Lapis Lazuli Ring Figurative Design 13.2g #13](http://koufuku.jp/cdn/shop/files/2000000087597_2.jpg?v=1768446423&width=480)
![[Pre-owned] MIKIMOTO K18YG Baby Pearl Ring, 3.6mm diameter, 1.8g, #9, One Price](http://koufuku.jp/cdn/shop/files/2000000044903_2.jpg?v=1768197669&width=480)
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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.