Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] K18 RUBY Ring R1.77ct D0.82ct 12.0g #13](http://koufuku.jp/cdn/shop/files/2000000124261_2.jpg?v=1767585974&width=480)
![[Pre-owned] K18 Ruby Ring R1.024ct D0.12ct CGL Sorting 9.6g #14](http://koufuku.jp/cdn/shop/files/DSC_2081.jpg?v=1774689978&width=480)
![[Pre-owned] K18YG Ruby Ring R0.68ct D0.05ct 5.9g #12](http://koufuku.jp/cdn/shop/files/2000000127507_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18YG RUBY RING R0.73ct D1.36ct 10.1g #14.5](http://koufuku.jp/cdn/shop/files/2000000023700_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18 Ruby Ring R1.83ct D0.25ct 12.1g #10](http://koufuku.jp/cdn/shop/files/2000000124360_2.jpg?v=1767585980&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R0.79ct D0.13ct 3.5g #10](http://koufuku.jp/cdn/shop/files/2000000126289_2.jpg?v=1767585980&width=480)
![[Pre-owned] PT900 RUBY RING R0.81ct DIA 7.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000098654_2.jpg?v=1767585984&width=480)
![[Pre-owned] PT900 RUBY Ring R1.52ct D0.44ct 9.9g #11](http://koufuku.jp/cdn/shop/files/2000000127149_2.jpg?v=1767585985&width=480)
![[Pre-owned] Queen (Heiwado & Co.) PT950 Burmese Ruby Ring, R1.384ct D0.79ct, with GIA Report, 6.4g, Size 9](http://koufuku.jp/cdn/shop/files/2000000020464_3.jpg?v=1767585984&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS8.26ct D0.50ct 6.6g #14](http://koufuku.jp/cdn/shop/files/2000000082981_2.jpg?v=1767585988&width=480)
![[Pre-owned] K18WG Emerald Ring E1.40ct D0.70ct 3.5g #16](http://koufuku.jp/cdn/shop/files/2000000036182_2.jpg?v=1767585991&width=480)
![[Pre-owned] PT900 Emerald Ring E1.60ct D0.72ct 7.8g #15](http://koufuku.jp/cdn/shop/files/2000000125930_2.jpg?v=1767585991&width=480)
![[Pre-owned] K18WG Emerald Ring E2.28ct D0.14ct 3.2g #13](http://koufuku.jp/cdn/shop/files/2000000045504_2.jpg?v=1767585991&width=480)
![[Pre-owned] PT900 EMERALD Ring E0.48ct D0.94ct 12.9g #18](http://koufuku.jp/cdn/shop/files/2000000065267_2.jpg?v=1767585991&width=480)
![[Pre-owned] K18WG Emerald Ring E1.18ct D0.65ct 4.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000069746_2.jpg?v=1767585991&width=480)
![[Pre-owned] PT900 EMERALD RING E2.66ct D0.55ct 8.1g #14](http://koufuku.jp/cdn/shop/files/2000000122038_2.jpg?v=1767585991&width=480)
![[Pre-owned] K18WG/YG Blue & Yellow Sapphire Ring, S1.50ct D0.06ct, with NGL Appraisal, 9.3g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000124582_3.jpg?v=1767585996&width=480)
![[Pre-owned] K18YG Emerald Ring E2.57ct D0.70ct 7.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000040233_2.jpg?v=1767585996&width=480)
![[Pre-owned] K18 Diamond 0.503ct E Color VS1 Class 3Excellent H&C D0.07ct CGL Certificate 2.3g #10](http://koufuku.jp/cdn/shop/files/2000000044507_3.jpg?v=1767585997&width=480)
![[Pre-owned] PT900 Peridot Ring P2.40ct D0.06ct with Appraisal Report, 7.0g, Size 19](http://koufuku.jp/cdn/shop/files/2000000120911_3.jpg?v=1767585997&width=480)
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![[Pre-owned] K18YG SAPPHIRE RING S0.87ct S0.54ct D0.294ct 6.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000126272_2.jpg?v=1767585996&width=480)
![[Pre-owned] K18WG EMERALD Emerald Ring E0.921ct D0.15ct 2.5g #13](http://koufuku.jp/cdn/shop/files/2000000045290_2.jpg?v=1767585997&width=480)
![[Pre-owned] K18YG DIAMOND RING 1.01ct D0.79ct 5.7g #10](http://koufuku.jp/cdn/shop/files/2000000125510_2.jpg?v=1767585997&width=480)
![[Pre-owned] PT900 Diamond V-line Ring D0.90ct 5.6g #12](http://koufuku.jp/cdn/shop/files/2000000048871_2.jpg?v=1767586001&width=480)
KOUFUKU is an e-commerce site that offers a wide range of products, including jewelry, precious metals, designer bags, designer watches, designer apparel, and tableware. In addition to retail sales, we also provide purchase services.
![[Pre-owned] MITSUKOSHI K18YG Ruby & Diamond Ring R0.79ct D0.82ct 7.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000145907_2.jpg?v=1788151913&width=480)
![[Used] PT900 NO HEAT SAPPHIRE RING Sri Lankan Unheated Sapphire Ring S5.40ct D1.19ct GIA Certificate 10.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000133799_3.jpg?v=1777881348&width=480)
![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)