Showing 1288 products
![[Pre-owned] 18K Yellow Gold Ruby Ring, 0.52ct R, 0.23ct D, 2.7g, #8](http://koufuku.jp/cdn/shop/files/2000000090245_2.jpg?v=1768444828&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R0.65ct D0.24ct 6.1g #11](http://koufuku.jp/cdn/shop/files/2000000117171_2.jpg?v=1768444652&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 0.73ct R, 1.36ct D, 10.1g, #14.5](http://koufuku.jp/cdn/shop/files/2000000023700_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R0.75ct D1.00ct 9.6g #15](http://koufuku.jp/cdn/shop/files/2000000040264_2.jpg?v=1765175628&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 0.80ct R, 0.18ct D, 4.1g](http://koufuku.jp/cdn/shop/files/2000000115566_2.jpg?v=1768185890&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 1.09ct, 0.49ct, 0.98ct, 10.1g, #12](http://koufuku.jp/cdn/shop/files/2000000038056_2.jpg?v=1768444653&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R1.50ct D0.23ct 5.0g #12](http://koufuku.jp/cdn/shop/files/DSC_6320.jpg?v=1771668456&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 3.00ct R, 1.19ct D, CGL Sorting, 7.8g, #14](http://koufuku.jp/cdn/shop/files/2000000029306_2.jpg?v=1768444692&width=480)
![[Pre-owned] 18K Yellow Gold Ruby and Diamond Ring, R 0.79ct, D 0.13ct, 3.5g, #10](http://koufuku.jp/cdn/shop/files/2000000126289_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R0.51ct D0.64ct 4.2g #16](http://koufuku.jp/cdn/shop/files/2000000116457_2.jpg?v=1765163849&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, 1.44ct R, 0.35ct D, 8.4g, Certificate of Authenticity, #11](http://koufuku.jp/cdn/shop/files/2000000110585_3.jpg?v=1765161777&width=480)
![[Pre-owned] K18YG RUBY Ruby Ring R0.65ct 5.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000044200_2.jpg?v=1749178071&width=480)
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![[Pre-owned] 18K Yellow Gold Ruby Ring, R2.19ct, D0.26ct, 7.6g, #12.5](http://koufuku.jp/cdn/shop/files/2000000075082_2.jpg?v=1749178071&width=480)
![[Used] K18YG RUBY Ruby Ring 6.6g #8](http://koufuku.jp/cdn/shop/files/2000000078335_2.jpg?v=1746252745&width=480)
![[Used] K18YG RUBY Ruby Ring 7.6g #17](http://koufuku.jp/cdn/shop/files/2000000112589_2.jpg?v=1761642460&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] K18YG RUBY Ruby Ring D0.19ct 7.0g #13](http://koufuku.jp/cdn/shop/files/2000000026633_2.jpg?v=1762391138&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.21ct, D 0.16ct, 4.4g, #12.5](http://koufuku.jp/cdn/shop/files/2000000106687_2.jpg?v=1762391138&width=480)
![[Used] K18YG RUBY Ruby Ring R0.30ct D0.71ct 3.0g #9.5](http://koufuku.jp/cdn/shop/files/2000000073101_2.jpg?v=1753147302&width=480)
![[Pre-owned] 18K Yellow Gold Ruby Ring, R 0.31ct, D 0.80ct, 5.3g, #11.5](http://koufuku.jp/cdn/shop/files/2000000106977_2.jpg?v=1762391139&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)
