Gems, Jewelry and Precious Metals
Showing 1707 products
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![[Used] PT900 MEXICO OPAL Mexican Opal Ring D1.05ct 11.7g #16](http://koufuku.jp/cdn/shop/files/2000000020433_2.jpg?v=1752392529&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.43ct, D0.51ct, 4.2g, #14](http://koufuku.jp/cdn/shop/files/2000000036373_2.jpg?v=1752392529&width=480)
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![[Used] PT900 SAPPHIRE non-heated sapphire ring S6.896ct D0.21ct Central Gem Research Institute identification book 7.3g #11](http://koufuku.jp/cdn/shop/files/2000000068367_3.jpg?v=1752392530&width=480)
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![[Pre-owned] K18WG CATS EYE Cat's Eye Ring CE2.03ct D0.30ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000067629_2.jpg?v=1752392530&width=480)
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![[Used] PT900 MEXICO OPAL Mexican Opal Ring D0.471ct 6.9g #11.5](http://koufuku.jp/cdn/shop/files/2000000072067_2.jpg?v=1752392547&width=480)
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![[Pre-owned] 18K Yellow Gold Demantoid Garnet Ring, G0.69ct, D0.70ct, Nihon Hokyo Kan, 6.4g, #11.5](http://koufuku.jp/cdn/shop/files/2000000071909_3.jpg?v=1752392550&width=480)
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![[Pre-owned] K18WG Jadeite Jadeite Ring J4.04ct D0.57ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000040745_2.jpg?v=1752392568&width=480)
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![[Pre-owned] 18K Yellow Gold 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] K18WG SAPPHIRE Sapphire Ring, S0.93ct, D0.17ct, 2.2g, #11.5](http://koufuku.jp/cdn/shop/files/2000000036618_2.jpg?v=1752392569&width=480)
![[Pre-owned] K18WG BLACK OPAL Black Opal Ring, BO 2.29ct, D 0.13ct, 3.4g, #13.5](http://koufuku.jp/cdn/shop/files/2000000036830_2.jpg?v=1752392569&width=480)
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![[Pre-owned] K18WG BLACK OPAL Black Opal Ring, BO 1.22ct, D 0.11ct, 3.3g, #13.5](http://koufuku.jp/cdn/shop/files/2000000036632_2.jpg?v=1752392568&width=480)
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![[Pre-owned] K18WG/Black Plated GOLDEN PEARL Golden Pearl Ring, 11.7mm, D2.68ct, 17.4g, #12.5](http://koufuku.jp/cdn/shop/files/2000000042398_2.jpg?v=1752392569&width=480)
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![[Used] K18WG Emerald Ring E2.11ct D0.52ct 4.7g #13](http://koufuku.jp/cdn/shop/files/2000000041865_2.jpg?v=1752392570&width=480)
![[Used] PT900 NO-HEAT PAPARACIA SAPPHIRE RING, Unheated Padparadscha Sapphire Ring, PS1.40ct D0.516ct, GRS Certificate, 5.9g, #11](http://koufuku.jp/cdn/shop/files/2000000071343_3.jpg?v=1752392572&width=480)
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![[Used] 18K Yellow Gold Diamond Ring, 1.26ct, 9.7g, #13.5](http://koufuku.jp/cdn/shop/files/2000000025438_2.jpg?v=1752392578&width=480)
![[Used] 18K Yellow Gold Emerald Ring, E0.92ct, CGL 9.4g, #10](http://koufuku.jp/cdn/shop/files/2000000071442_3.jpg?v=1752392578&width=480)
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![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)
![[Used] PT1000/PT900 BLACK OPAL NECKLACE Black Opal Pendant Necklace BO7.57ct D1.34ct 10.7g](http://koufuku.jp/cdn/shop/files/2000000112718_2.jpg?v=1771816794&width=480)
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