Showing 1787 products
![[Pre-owned] K18YG Ruby Ring R1.46ct D0.52ct 4.7g Size 12](http://koufuku.jp/cdn/shop/files/DSC_6326.jpg?v=1775191051&width=480)
![[Pre-owned] K18YG Ruby Ring R1.48ct D1.18ct 8.5g #11.5](http://koufuku.jp/cdn/shop/files/2000000115450_2.jpg?v=1762391162&width=480)
![[Pre-owned] K18YG Ruby Ring R1.699ct D0.67ct 8.3g #9.5](http://koufuku.jp/cdn/shop/files/2000000044569_2.jpg?v=1752392569&width=480)
![[Pre-owned] K18YG Ruby Ring R2.10ct D1.00ct 9.5g #12](http://koufuku.jp/cdn/shop/files/DSC_3928.jpg?v=1769670706&width=480)
![[Pre-owned] K18YG Ruby Ring, R2.80ct D0.11ct, with NGL Appraisal, 7.2g, Size #15](http://koufuku.jp/cdn/shop/files/DSC_1977.jpg?v=1775179861&width=480)
Sold Out
![[Pre-owned] K18YG Ruby Ring, R3.00ct D0.30ct, with NGL Appraisal, 7.8g, Size 14](http://koufuku.jp/cdn/shop/files/2000000115191_3.jpg?v=1762391160&width=480)
![[Pre-owned] K18YG Ruby Ring R3.15ct D0.67ct 8.3g #9](http://koufuku.jp/cdn/shop/files/2000000014210_2.jpg?v=1762391180&width=480)
![[Pre-owned] K18YG Ruby Ring R4.17ct D0.24ct 6.5g #13](http://koufuku.jp/cdn/shop/files/2000000016276_2.jpg?v=1762391163&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 R0.69ct D1.10ct with CGL Sorting, 6.5g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000124889_3.jpg?v=1767585975&width=480)
Sold Out
![[Pre-owned] K18YG Ruby Ring R0.75ct D0.46ct 6.3g #10](http://koufuku.jp/cdn/shop/files/2000000121666_2.jpg?v=1768444653&width=480)
![[Pre-owned] K18YG Ruby & Diamond Pave Eternity Ring R1.20ct D3.40ct 3.9g #11.5](http://koufuku.jp/cdn/shop/files/DSC_2023.jpg?v=1775189064&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R0.19ct D0.12ct 4.2g #12](http://koufuku.jp/cdn/shop/files/DSC_2005.jpg?v=1761632346&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R0.69ct D0.05ct 4.5g #12](http://koufuku.jp/cdn/shop/files/DSC_2029.jpg?v=1775189217&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R2.75ct D0.75ct 10.0g #11.5](http://koufuku.jp/cdn/shop/files/DSC_2014.jpg?v=1761632530&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring 6.9g #9.5](http://koufuku.jp/cdn/shop/files/2000000043555_2.jpg?v=1762391102&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring R0.50ct D0.50ct 5.6g #10](http://koufuku.jp/cdn/shop/files/2000000105567_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Ruby & Diamond Ring, includes appraisal report, 9.7g, size 14.5](http://koufuku.jp/cdn/shop/files/2000000127255_3.jpg?v=1767585969&width=480)
Sold Out
![[Pre-owned] K18YG Rutile Quartz Cat's Eye Necklace QZ6.02ct D0.02ct 13.2g](http://koufuku.jp/cdn/shop/files/2000000115290_2.jpg?v=1766992797&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring S1.64ct D0.42ct with CGL Sorting, 6.6g, Size 11](http://koufuku.jp/cdn/shop/files/2000000126074_3.jpg?v=1767585957&width=480)
![[Pre-owned] K18YG SAPPHIRE DIAMOND RING 4.5g #14](http://koufuku.jp/cdn/shop/files/2000000056623_2.jpg?v=1766804172&width=480)
![[Used] K18YG SAPPHIRE NECKLACE Sapphire/Diamond Necklace S24.02ct D3.12ct 42.6g](http://koufuku.jp/cdn/shop/files/2000000023366_2.jpg?v=1771816794&width=480)
Sold Out
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)