Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] PT900 Diamond Ring 1.645ct D0.17ct 7.3g #11](http://koufuku.jp/cdn/shop/files/2000000017488_2.jpg?v=1765877429&width=480)
![[Used] PT900 GARNET Ring G3.00ct D0.10ct 7.6g #12](http://koufuku.jp/cdn/shop/files/2000000093536_2.jpg?v=1765877430&width=480)
![[Used] PT900 Aquamarine Ring AQ1.01ct D0.032ct 7.3g #11](http://koufuku.jp/cdn/shop/files/2000000090153_2.jpg?v=1765877430&width=480)
![[Used] PT900 DIAMOND V-Line Ring, D0.77ct, 6.4g, #13](http://koufuku.jp/cdn/shop/files/2000000028262_2.jpg?v=1765877430&width=480)
![[Pre-owned] PT900 TOURMALINE Red Tourmaline (Rubellite) Ring, 1.64ct, D0.52ct, GRJ Sorting, 12.4g, #12.5](http://koufuku.jp/cdn/shop/files/2000000049632_3.jpg?v=1765877430&width=480)
![[Pre-owned] QUEEN (Heiwado Trading) K18YG Diamond Ring, D1.28ct, 6.8g, #15](http://koufuku.jp/cdn/shop/files/2000000010748_2.jpg?v=1765877430&width=480)
![[Pre-owned] PT900 Diamond Ring 0.250ct D0.13ct CGL Certified 1.7g #9](http://koufuku.jp/cdn/shop/files/2000000020143_3.jpg?v=1765877448&width=480)
![[Pre-owned] PT900 TOURMALINE Green Tourmaline Ring, GT 5.72ct, D 0.23ct, 8.5g, #15.5](http://koufuku.jp/cdn/shop/files/2000000011219_2.jpg?v=1765877448&width=480)
![[Used] K18 DIAMOND Diamond Ring D1.02ct 6.3g #15.5](http://koufuku.jp/cdn/shop/files/2000000106298_2.jpg?v=1765877448&width=480)
![[Used] K18YG CORAL Ring D0.10ct 3.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000044941_2.jpg?v=1765877448&width=480)
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![[Used] K18/PT900 DIAMOND Ring 0.397ct D0.43ct 4.0g #13](http://koufuku.jp/cdn/shop/files/2000000037646_2.jpg?v=1765877450&width=480)
![[Used] K18YG CORAL Round Coral Ring 6.6mm 2.2g #](http://koufuku.jp/cdn/shop/files/2000000044927_2.jpg?v=1765877457&width=480)
![[Used] PT900 SEA PEARL White Butterfly Pearl Ring, 10.8mm, D0.18ct, 6.9g, #13](http://koufuku.jp/cdn/shop/files/2000000010106_2.jpg?v=1765877457&width=480)
![[Pre-owned] K18WG DIAMOND Black & Colorless Diamond Pinky Ring, BD0.40ct, D0.28ct, 4.5g, #4](http://koufuku.jp/cdn/shop/files/2000000073088_2.jpg?v=1765877458&width=480)
![[Pre-owned] Nobuko Ishikawa K18/PT900 Diamond Ring, D0.26ct, 8.6g, #10](http://koufuku.jp/cdn/shop/files/2000000077314_2.jpg?v=1765877458&width=480)
![[Used] K18WG DIAMOND Diamond Ring D1.00ct 7.3g #16](http://koufuku.jp/cdn/shop/files/2000000027364_2.jpg?v=1765879251&width=480)
![[Used] PT900 RUBY Ruby Ring, R0.53ct, D0.07ct, 6.9g, #16](http://koufuku.jp/cdn/shop/files/2000000124735_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18WG DIAMOND Colorless & Black Diamond Ring D0.26ct 2.2g #11.5](http://koufuku.jp/cdn/shop/files/2000000124650_2.jpg?v=1766219021&width=480)
![[Used] K18YG DIAMOND Ring D0.50ct 3.1g #11](http://koufuku.jp/cdn/shop/files/2000000026718_2.jpg?v=1766219021&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] 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)
