Showing 1419 products
![[Used] K18YG Emerald Ring 4.5g #10](http://koufuku.jp/cdn/shop/files/2000000070919_2.jpg?v=1752392450&width=480)
![[Pre-owned] 18K Yellow Gold Pink Tourmaline Ring, 0.67ct Tall, 0.14ct Deep, 3.1g, #5](http://koufuku.jp/cdn/shop/files/2000000080543_2.jpg?v=1752392449&width=480)
![[Used] K14WG TOURMALINE Tourmaline Ring 2.4g #16](http://koufuku.jp/cdn/shop/files/2000000078359_2.jpg?v=1752392449&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring, S1.90ct, D0.20ct, 4.9g, #15](http://koufuku.jp/cdn/shop/files/2000000075518_2.jpg?v=1752392449&width=480)
![[Used] PT900 AQUAMARINE Ring, A8.31ct, D0.47ct, 9.3g, #13](http://koufuku.jp/cdn/shop/files/2000000083001_2.jpg?v=1752392449&width=480)
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![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.70ct, D 0.56ct, 4.7g, #11](http://koufuku.jp/cdn/shop/files/2000000043562_2.jpg?v=1751698229&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 0.47ct, Diamonds, 5.6g, #13.5](http://koufuku.jp/cdn/shop/files/2000000042527_2.jpg?v=1751698229&width=480)
![[Pre-owned] K18/PT850 RUBY Ruby Ring, R0.41ct, D0.18ct, 5.0g, #12](http://koufuku.jp/cdn/shop/files/2000000068473_2.jpg?v=1751698229&width=480)
![[Used] K18YG Emerald and Diamond Ring, E1.03ct, D2.45ct, 7.0g, #13](http://koufuku.jp/cdn/shop/files/2000000019895_2.jpg?v=1750923957&width=480)
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![[Used] K18WG DIAMOND Diamond Ring 0.321ct D0.16ct 4.0g #14](http://koufuku.jp/cdn/shop/files/2000000037301_2.jpg?v=1750923953&width=480)
![[Used] K18WG DIAMOND Diamond Ring D1.37ct 9.8g #5](http://koufuku.jp/cdn/shop/files/2000000039831_2.jpg?v=1750923953&width=480)
![[Used] K18WG Black Opal Ring, BO1.02ct, D0.35ct, #13.5, Certified](http://koufuku.jp/cdn/shop/files/2000000036571_3.jpg?v=1750923953&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.
![[Pre-owned] 18K White Gold Pink Sapphire Ring, PS 0.42ct, D 0.35ct, 7.5g, #12](http://koufuku.jp/cdn/shop/files/2000000043944_2.jpg?v=1750923953&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)
