Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] PT900 EMERALD RING E2.30ct D1.95ct 12.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000019796_2.jpg?v=1766992784&width=480)
![[Pre-owned] PT900 EMERALD RING E2.07ct D2.06ct GRS Certified 8.3g #12](http://koufuku.jp/cdn/shop/files/2000000090412_3.jpg?v=1766992784&width=480)
![[Pre-owned] Sachi Fukuhara PT900/K18YG TRAPICHE EMERALD Ring E20.048ct D0.24ct, with Certificate, 23.2g, Size #15](http://koufuku.jp/cdn/shop/files/2000000019246_4.jpg?v=1766992785&width=480)
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![[Pre-owned] K18WG DIAMOND Necklace D0.97ct 3.9g](http://koufuku.jp/cdn/shop/files/2000000115832_2.jpg?v=1766992797&width=480)
![[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 EMERALD DIAMOND Pendant Necklace 7.9g](http://koufuku.jp/cdn/shop/files/2000000115320_3.jpg?v=1766992797&width=480)
![[Pre-owned] K18WG Colombian Emerald Ring E1.05ct D0.36ct GRS 5.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000089621_3.jpg?v=1767585886&width=480)
![[Pre-owned] PT900 Green Tourmaline Ring, T1.21ct, D0.75ct, 6.9g, Size 8](http://koufuku.jp/cdn/shop/files/2000000018218_2.jpg?v=1767585887&width=480)
![[Pre-owned] PT900 EMERALD Ring E2.39ct D0.48ct 6.9g #14.5](http://koufuku.jp/cdn/shop/files/2000000029955_2.jpg?v=1767585888&width=480)
![[Pre-owned] PT900 Emerald Ring, E1.55ct D0.90ct, NGL Sorting, 11.3g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000094069_3.jpg?v=1767585887&width=480)
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![[Pre-owned] PT900 Emerald Ring, E1.665ct, D0.93ct, with NGL Sorting, 6.6g, Size 12](http://koufuku.jp/cdn/shop/files/2000000093864_2.jpg?v=1767585887&width=480)
![[Pre-owned] K18YG Emerald & Diamond Eternity Ring E0.22ct D0.31ct 2.1g #11](http://koufuku.jp/cdn/shop/files/2000000099675_2.jpg?v=1767585887&width=480)
![[Pre-owned] PT950 Sri Lankan Unheated Sapphire Ring S6.164ct D1.55ct GIA Report 9.3g #12](http://koufuku.jp/cdn/shop/files/2000000015163_3.jpg?v=1767585887&width=480)
![[Pre-owned] K18WG Emerald Ring E2.169ct D0.36ct 3.3g #13.5](http://koufuku.jp/cdn/shop/files/2000000094311_2.jpg?v=1767585886&width=480)
![[Pre-owned] PT900 Grossular Garnet Ring G1.01ct D1.00ct 7.8g #16](http://koufuku.jp/cdn/shop/files/2000000015019_2.jpg?v=1767585887&width=480)
![[Pre-owned] PT900 Blue Topaz Ring T6.56ct D0.84ct 11.2g #13](http://koufuku.jp/cdn/shop/files/2000000069418_3.jpg?v=1767585887&width=480)
![[Pre-owned] PT900 EMERALD RING E2.695ct D0.34ct 6.6g #13](http://koufuku.jp/cdn/shop/files/2000000088754_3.jpg?v=1767585887&width=480)
![[Pre-owned] K18YG MEXICO OPAL Ring OP1.19ct D1.31ct 6.3g #10.5](http://koufuku.jp/cdn/shop/files/2000000057293_2.jpg?v=1767585887&width=480)
![[Pre-owned] K18YG Ruby Ring R0.90ct D1.40ct 4.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000044606_2.jpg?v=1767585888&width=480)
![[Pre-owned] K18WG EMERALD Emerald Ring E1.43ct D0.80ct 6.7g #14.5](http://koufuku.jp/cdn/shop/files/2000000094687_2.jpg?v=1767585888&width=480)
![[Pre-owned] K18WG Sri Lankan Unheated Sapphire Ring S2.78ct D1.00ct with GRS Certificate, 5.6g, Size #13](http://koufuku.jp/cdn/shop/files/DSC_7850.jpg?v=1775190729&width=480)
![[Pre-owned] PT900 EMERALD Ring E1.08ct D1.12ct 9.2g #13](http://koufuku.jp/cdn/shop/files/2000000014586_2.jpg?v=1767585887&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] PT900 Sapphire, Burmese Unheated Sapphire Ring, S3.39ct D1.30ct, GIA Report, 10.9g, #10](http://koufuku.jp/cdn/shop/files/2000000015064_3.jpg?v=1767585888&width=480)
![[Pre-owned] PT900 SAPPHIRE Ring S1.44ct D0.54ct 6.5g #14.5](http://koufuku.jp/cdn/shop/files/2000000028248_2.jpg?v=1767585888&width=480)
![[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)