Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] K18YG DIAMOND Ring D1.00ct 4.0g #11](http://koufuku.jp/cdn/shop/files/2000000053165_2.jpg?v=1762397785&width=480)
![[Pre-owned] K18YG Emerald Brooch/Pendant Necklace E3.45ct D0.19ct 8.5g](http://koufuku.jp/cdn/shop/files/2000000106779_2.jpg?v=1762397785&width=480)
![[Pre-owned] K18YG JADEITE Jade Necklace 15.8g](http://koufuku.jp/cdn/shop/files/2000000099538_2.jpg?v=1762397785&width=480)
![[Pre-owned] K18YG Emerald Ring 2.6g #12](http://koufuku.jp/cdn/shop/files/2000000040998_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG Indian Alexandrite Ring, A1.06ct D0.76ct, with GIA Report, 4.7g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000113135_3.jpg?v=1762397785&width=480)
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![[Used] K18YG PINK SAPPHIRE RING PS1.10ct D1.64ct 7.3g #12](http://koufuku.jp/cdn/shop/files/2000000042503_2.jpg?v=1762397786&width=480)
![[Used] PT850/PT900 JADEITE NECKLACE Jade (Hisui) Pendant Necklace J0.34ct D2.601ct 10.6g](http://koufuku.jp/cdn/shop/files/2000000005805_2.jpg?v=1762397785&width=480)
![[Pre-owned] K18WG Black Opal Ring, BO 0.90ct, D 0.15ct, 2.7g, Size 13](http://koufuku.jp/cdn/shop/files/2000000036861_2.jpg?v=1762397785&width=480)
![[Pre-owned] K18WG Ruby & Diamond Ring R2.40ct D0.33ct 7.0g #17](http://koufuku.jp/cdn/shop/files/2000000087269_2.jpg?v=1762397786&width=480)
![[Pre-owned] PT850 RUBY Pendant Necklace R0.62ct D0.67ct 10.5g](http://koufuku.jp/cdn/shop/files/2000000058016_2.jpg?v=1762397786&width=480)
![[Pre-owned] PT900 Paraiba Tourmaline Ring, PT0.26ct, D0.33ct, with CGL Appraisal, 3.7g, Size 11](http://koufuku.jp/cdn/shop/files/2000000025544_3.jpg?v=1762397786&width=480)
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![[Pre-owned] K18WG Colombian Emerald Ring, E0.63ct D0.63ct, with GRS Certificate, 3.8g, Size #14](http://koufuku.jp/cdn/shop/files/2000000039206_4.jpg?v=1762397786&width=480)
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![Used] PT850/PT900 EMERALD PENDANT NECKLACE E3.83ct D1.32ct 16.0g](http://koufuku.jp/cdn/shop/files/2000000074474_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Star Sapphire Ring SS0.543ct D0.252ct 3.0g #10.5](http://koufuku.jp/cdn/shop/files/2000000115160_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Emerald Ring E0.34ct D1.16ct 9.7g #15](http://koufuku.jp/cdn/shop/files/2000000069678_2.jpg?v=1762397786&width=480)
![[Used] K18WG Ruby Bracelet R7.78ct D0.45ct 16.1g 16.5cm](http://koufuku.jp/cdn/shop/files/2000000093697_2.jpg?v=1762397785&width=480)
![[Pre-owned] PT850/PT900 ALEXANDRITE Pendant Necklace A1.132ct D0.59ct with Identification Report, 3.9g](http://koufuku.jp/cdn/shop/files/2000000017631_2.jpg?v=1762397786&width=480)
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![[Pre-owned] K18WG Emerald Ring E1.00ct D0.38ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000045627_2.jpg?v=1762397786&width=480)
![Used] K18YG STAR SAPPHIRE PENDANT NECKLACE 15.0g](http://koufuku.jp/cdn/shop/files/2000000024523_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG/PT900 Semi-Black Opal Pendant Necklace, BO2.18ct D0.17ct 4.4g](http://koufuku.jp/cdn/shop/files/2000000082851_2.jpg?v=1762397786&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] PT900 Emerald Ring, E1.293ct, D0.71ct, 5.7g, #9](http://koufuku.jp/cdn/shop/files/2000000018256_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG Green Tourmaline Ring, T13.679ct, D1.30ct, 9.5g, Size #14](http://koufuku.jp/cdn/shop/files/2000000092706_2.jpg?v=1762397786&width=480)
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![[Pre-owned] K18WG Rubellite Tourmaline Ring T6.65ct D1.15ct 7.6g #13](http://koufuku.jp/cdn/shop/files/2000000115061_2.jpg?v=1762397786&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)