Gems, Jewelry and Precious Metals
Showing 1707 products
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S2.022ct, D0.18ct, 3.6g, #11.5](http://koufuku.jp/cdn/shop/files/2000000036885_2.jpg?v=1760667249&width=480)
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![[Pre-owned] K18WG AQUAMARINE Aquamarine Ring AQ2.31ct D0.47ct 4.6g #14](http://koufuku.jp/cdn/shop/files/2000000045337_2.jpg?v=1760667250&width=480)
![[Used] PT900 Jadeite Jadeite Ring J4.40ct 0.55ct 6.8g #12](http://koufuku.jp/cdn/shop/files/2000000071084_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18YG OPAL Cantera Opal Ring, OP 6.47ct, D 0.04ct, 8.2g, #14](http://koufuku.jp/cdn/shop/files/2000000076782_2.jpg?v=1760667249&width=480)
![[Pre-owned] PT900 Alexandrite Ring, A0.73ct, D0.33ct, with Gem Research Japan Sorting, #11](http://koufuku.jp/cdn/shop/files/2000000021812_3.jpg?v=1760667250&width=480)
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![[Used] PT900 DIAMOND Ring D1.00ct 6.3g #12](http://koufuku.jp/cdn/shop/files/2000000087818_2.jpg?v=1760667249&width=480)
![[Used] PT900 OPAL Opal Ring, OP 2.49ct, D 0.60ct, 10.1g, #15.5](http://koufuku.jp/cdn/shop/files/2000000011332_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S13.31ct, D0.55ct, Nihon Hokyo So, 8.9g, #14.5](http://koufuku.jp/cdn/shop/files/2000000095868_3.jpg?v=1760667250&width=480)
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![[Pre-owned] 18K White Gold Jadeite Jadeite Ring, J4.99ct, D0.56ct, Japan Gemological Association Sorting, 6.1g, #12](http://koufuku.jp/cdn/shop/files/2000000044187_2.jpg?v=1760667250&width=480)
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![[Pre-owned] K18WG Jadeite Jadeite Ring J4.69ct D0.88ct 6.0g #13](http://koufuku.jp/cdn/shop/files/2000000042824_2.jpg?v=1760667250&width=480)
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![[Pre-owned] PT900 BLACK OPAL Black Opal Ring, BO 1.65ct, D 0.56ct, 8.4g, #10](http://koufuku.jp/cdn/shop/files/2000000088020_2.jpg?v=1760667250&width=480)
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![[Pre-owned] Isako Kikuchi Design 18K Yellow Gold Garnet Ring, D0.19, GRJ Sorting, 11.1g, #12](http://koufuku.jp/cdn/shop/files/2000000077826_3.jpg?v=1760667250&width=480)
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![[Pre-owned] K18WG Jadeite Jadeite Ring J2.051ct D0.77ct 6.4g #14](http://koufuku.jp/cdn/shop/files/2000000040776_2.jpg?v=1760667250&width=480)
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![[Pre-owned] K18WG BLACK OPAL Black Opal Ring, BO 2.15ct, D 0.56ct, 4.0g, #13](http://koufuku.jp/cdn/shop/files/2000000034553_2.jpg?v=1760667249&width=480)
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![[Used] PT900 RUBY Ruby Ring, R0.38ct, D0.30ct, CGL Sorting, 4.6g, #7](http://koufuku.jp/cdn/shop/files/2000000051512_3.jpg?v=1760667250&width=480)
![[Used] PT900 RUBY RING Invisible Setting R0.47ct D0.41ct 8.4g #12](http://koufuku.jp/cdn/shop/files/2000000075525_2.jpg?v=1760667250&width=480)
![[Used] PT900 TOURMALINE Green Tourmaline Ring, T8.98ct, D0.83ct, 15.4g](http://koufuku.jp/cdn/shop/files/2000000013893_2.jpg?v=1760667250&width=480)
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Recommended Items![[Used] K18YG DIAMOND Ring D1.00 #11 Solitaire 3.9g](http://koufuku.jp/cdn/shop/files/2000000073590_8_04354e12-eb99-45f8-961b-74fbee55a5e7.jpg?v=1778745302&width=480)
![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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