Showing 1288 products
![[Used] K18PG DIAMOND Ring D1.07ct 4.2g #11.5](http://koufuku.jp/cdn/shop/files/2000000039602_2.jpg?v=1750401687&width=480)
![[Used] K18PG DIAMOND Diamond Ring D1.60ct 5.9g #12](http://koufuku.jp/cdn/shop/files/DSC_3934.jpg?v=1769670729&width=480)
![[Used] K18PG DIAMOND ring, D2.83ct, 3.9g](http://koufuku.jp/cdn/shop/files/2000000039886_2.jpg?v=1765012878&width=480)
![[Pre-owned] 18K PG Rose Quartz Pendant Necklace RQ 12.33ct D0.56ct 10.7g](http://koufuku.jp/cdn/shop/files/2000000076652_2.jpg?v=1764830345&width=480)
![[Pre-owned] K18WG ALEXANDRITE RING Alexandrite Diamond Ring A1.00ct D0.80ct 5.6g #15](http://koufuku.jp/cdn/shop/files/2000000008844_2.jpg?v=1768808620&width=480)
![[Pre-owned] K18WG AQUAMARINE Aquamarine Pendant Necklace A0.54ct D0.37ct 5.5g](http://koufuku.jp/cdn/shop/files/2000000058474_2.jpg?v=1764830303&width=480)
![[Pre-owned] K18WG AQUAMARINE Aquamarine Ring AQ2.31ct D0.47ct 4.6g #14](http://koufuku.jp/cdn/shop/files/2000000045337_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG Aquamarine Ring, Aquamarine 3.82ct, S 1.35ct, D 0.22ct, 8.7g, #14](http://koufuku.jp/cdn/shop/files/2000000042756_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18WG BLACK DIAMOND Black & Colorless Diamond Ring 0.54ct D0.73ct 6.2g #17](http://koufuku.jp/cdn/shop/files/2000000040097_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18WG BLACK OPAL RING Black Opal Ring BO1.5 D0.49ct 5.3g](http://koufuku.jp/cdn/shop/files/2000000042114_2.jpg?v=1768806608&width=480)
![[Used] K18WG BLACK OPAL Black Opal Ring BO4.10ct D0.13ct 3.2g](http://koufuku.jp/cdn/shop/files/2000000045214_7.jpg?v=1741937635&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] K18WG BLACK OPAL Black Opal Ring, BO 2.10ct, D 0.40ct, 3.4g, #13](http://koufuku.jp/cdn/shop/files/2000000043487_2.jpg?v=1750401687&width=480)
![[Pre-owned] K18WG BLACK OPAL Black Opal Ring 0.79ct D0.16ct 2.7g #13](http://koufuku.jp/cdn/shop/files/DSC_6314.jpg?v=1771668363&width=480)
![[Pre-owned] K18WG BLACK OPAL Black Opal Ring, BO 0.50ct, D 0.20ct, 1.7g, #13](http://koufuku.jp/cdn/shop/files/2000000036847_2.jpg?v=1750401687&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)
