Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] K18YG South Sea White Pearl Ring, P12.2mm, D1.80ct, 11.3g, Size 7](http://koufuku.jp/cdn/shop/files/2000000044002_2.jpg?v=1768882396&width=480)
![[Pre-owned] PT900 DIAMOND RING 0.22ct D0.14ct 3.3g #11](http://koufuku.jp/cdn/shop/files/2000000121932_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS3.96ct D0.09ct 3.6g #12.5](http://koufuku.jp/cdn/shop/files/2000000050539_2.jpg?v=1768882395&width=480)
![[Pre-owned] PT900 DIAMOND RING 1.002ct I-Color SI2-Clarity D1.005ct CGL Certified 12.1g #12](http://koufuku.jp/cdn/shop/files/2000000123424_4.jpg?v=1768882395&width=480)
![[Pre-owned] PT900 SAPPHIRE RING Sapphire/Ruby Ring S1.11ct R0.45ct D1.00ct 14.8g](http://koufuku.jp/cdn/shop/files/2000000123240_2.jpg?v=1768882394&width=480)
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![[Pre-owned] K18YG DIAMOND RING D1.00ct 5.0g #21](http://koufuku.jp/cdn/shop/files/2000000117539_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18PG Diamond Full Eternity Ring, D3.04ct, 6.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069197_2.jpg?v=1768882395&width=480)
![[Pre-owned] PT900/K18YG DIAMOND RING D3.00ct 13.8g #12](http://koufuku.jp/cdn/shop/files/2000000072821_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE RING Star Sapphire Ring SS2.58ct D0.49ct 5.0g #13.5](http://koufuku.jp/cdn/shop/files/2000000045597_2.jpg?v=1768882395&width=480)
![[Pre-owned] PT900 NO HEAT SAPPHIRE RING Madagascar Unheated Sapphire Ring S2.79ct D0.68ct GIA Report 6.4g #13.5](http://koufuku.jp/cdn/shop/files/2000000005508_4.jpg?v=1768882395&width=480)
![[Pre-owned] Ponte Vecchio K18YG DIAMOND RING D0.26ct 13.9g #10 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000124230_2.jpg?v=1768882395&width=480)
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![[Pre-owned] PT900 SAPPHIRE RING S2.57ct D1.51ct 14.3g #15](http://koufuku.jp/cdn/shop/files/2000000071954_2.jpg?v=1768882396&width=480)
![[Pre-owned] K18YG SAPPHIRE/RUBY RING D0.16ct 3.6g #12](http://koufuku.jp/cdn/shop/files/2000000056203_2.jpg?v=1768882395&width=480)
![[Pre-owned] PT900 SAPPHIRE RING, Sapphire 1.81ct, Diamond 0.44ct, with grading report, 5.1g, Size 15](http://koufuku.jp/cdn/shop/files/2000000069449_3.jpg?v=1768882395&width=480)
![[Pre-owned] K18YG SAPPHIRE RING S0.30ct D0.30ct 4.0g #9](http://koufuku.jp/cdn/shop/files/2000000123882_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18YG/PT900 MULTI-STONE RING Ruby, Sapphire, Emerald Ring R0.66ct S0.56ct E0.22ct D0.15ct 8.3g #13.5](http://koufuku.jp/cdn/shop/files/2000000123356_2.jpg?v=1768882395&width=480)
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![Used] MIKIMOTO PT950 ALEXANDRITE RING A0.42ct D0.62ct 6.1g #15 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000123844_3.jpg?v=1768882396&width=480)
![[Pre-owned] JUSTIN DAVIS K18WG DIAMOND RING D0.15ct 8.2g ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000124162_2.jpg?v=1768882396&width=480)
![[Pre-owned] GUCCI K18YG DIAMOND RUNNING RING 4.7g #8 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000124254_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG Diamond Ring, Brown & Colorless Diamond Ring, D1.77ct, 13.6g, Size 18](http://koufuku.jp/cdn/shop/files/2000000123288_2.jpg?v=1768882396&width=480)
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![[Used] K18YG QUARTZITE RING, Size 14, 4g](http://koufuku.jp/cdn/shop/files/2000000121260_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG DIAMOND RING D0.51ct D0.48ct 5.3g #16.5](http://koufuku.jp/cdn/shop/files/2000000042558_2.jpg?v=1769397963&width=480)
![Used] K18WG DIAMOND Diamond Ring D2.07ct 8.7g #13.5](http://koufuku.jp/cdn/shop/files/2000000036946_2.jpg?v=1769397964&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)