Showing 1787 products
![[Pre-owned] K18WG Black Opal Ring BO7.89ct D0.47ct 6.7g #14.5](http://koufuku.jp/cdn/shop/files/2000000034225_2.jpg?v=1766219023&width=480)
![[Pre-owned] K18WG Black Opal Ring BO2.00ct D0.27ct 4.3g #12.5](http://koufuku.jp/cdn/shop/files/2000000036731_2.jpg?v=1767586070&width=480)
![[Used] K18WG PARAIBA TOURMALINE RING Paraiba Tourmaline Ring PT3.50ct D3.66ct GRS Certificate 11.8g #13](http://koufuku.jp/cdn/shop/files/2000000095103_3.jpg?v=1782370911&width=480)
![[Pre-owned] K18WG Paraiba Tourmaline Pendant Necklace P0.23ct D0.89ct 6.5g](http://koufuku.jp/cdn/shop/files/2000000048741_2.jpg?v=1765175629&width=480)
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![[Pre-owned] K18WG South Sea Pearl Pendant Necklace P15.4mm D0.32ct 8.6g](http://koufuku.jp/cdn/shop/files/2000000015842_2.jpg?v=1765161777&width=480)
![[Used] K18WG PERIDOT DIAMOND EARRINGS Heart-Shaped Peridot Earrings 2.5g](http://koufuku.jp/cdn/shop/files/2000000084114_2.jpg?v=1785737198&width=480)
![[Pre-owned] K18WG PERIDOT EARRINGS Peridot Earrings DIA 2.4g](http://koufuku.jp/cdn/shop/files/2000000084091_2.jpg?v=1792042474&width=480)
![[Pre-owned] K18WG Pink Sapphire Bracelet, PS18.10ct, D1.84ct, 26.8g, 16.5cm](http://koufuku.jp/cdn/shop/files/2000000073958_2.jpg?v=1768197670&width=480)
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![[Pre-owned] K18WG Pink Sapphire Ring, PS2.07ct, D0.45ct, with Appraisal Report, 5.6g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000025889_3.jpg?v=1766219023&width=480)
![[Pre-owned] K18WG Pink Sapphire Unheated Pink Sapphire Ring PS3.10ct D0.50ct AIGS/GRS Certified 4g #13.5](http://koufuku.jp/cdn/shop/files/2000000045108_4.jpg?v=1751698229&width=480)
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![[Pre-owned] K18WG Pink Sapphire Ring PS0.42ct D0.35ct 7.5g #12](http://koufuku.jp/cdn/shop/files/2000000043944_2.jpg?v=1750923953&width=480)
![[Used] K18WG PURPLE SAPPHIRE RING PS1.428ct D0.93ct 4.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000070025_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG Rubellite Tourmaline Ring T23.55ct D0.70ct 16.0g #14](http://koufuku.jp/cdn/shop/files/2000000039169_2.jpg?v=1765877332&width=480)
![[Pre-owned] K18WG RUBY BRACELET Ruby/Diamond Bracelet R10.28ct D0.95ct 18.4g 18cm](http://koufuku.jp/cdn/shop/files/2000000146164_2.jpg?v=1787900642&width=480)
![Used] K18WG RUBY DIAMOND RING 7.9g #10](http://koufuku.jp/cdn/shop/files/2000000126685_2.jpg?v=1771814587&width=480)
![[Pre-owned] K18WG Burmese Ruby Earrings, R2.79ct D3.21ct, Pigeon Blood, with AIGS Appraisal, 13.6g](http://koufuku.jp/cdn/shop/files/2000000089393_4.jpg?v=1771665042&width=480)
![[Pre-owned] K18WG Mozambique Unheated Ruby Earrings, R6.73ct, D3.46ct, with AIGS Appraisal, 11.5g](http://koufuku.jp/cdn/shop/files/2000000042947_4.jpg?v=1771665161&width=480)
![[Pre-owned] K18WG RUBY EARRINGS R5.80ct D0.09ct 4.7g](http://koufuku.jp/cdn/shop/files/2000000115023_2.jpg?v=1771658081&width=480)
![[Pre-owned] K18WG RUBY EARRINGS Ruby R0.45ct + R0.45ct Diamond D0.35ct + D0.35ct 4.2g](http://koufuku.jp/cdn/shop/files/2000000146096_2.jpg?v=1792041613&width=480)
![[Pre-owned] K18WG RUBY EARRINGS R4.97ct D0.79ct 6.8g](http://koufuku.jp/cdn/shop/files/2000000129563_2.jpg?v=1786341153&width=480)
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![[Pre-owned] K18WG Ruby Earrings R5.14ct D0.26ct with Japan Gem Sciences Association Appraisal Report 4.7g](http://koufuku.jp/cdn/shop/files/2000000125718_3.jpg?v=1786337288&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)