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![[Used] POLA K18YG DIAMOND Diamond Ring 0.19ct D0.45ct 3.7g #9](http://koufuku.jp/cdn/shop/files/2000000030555_2.jpg?v=1746172806&width=480)
![[Used] POLA K18YG Sapphire, Ruby, Emerald Ring S0.13ct R0.07ct E0.05ct D0.13ct 5.5g #12](http://koufuku.jp/cdn/shop/files/2000000052922_2.jpg?v=1745124569&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.
![[Used] POLA K18YG Diamond Ring D0.38ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000053110_2.jpg?v=1745900526&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)
