Showing 1787 products
![[Pre-owned] PT900 AQUAMARINE Ring AQ1.01ct D0.032ct 7.3g #11](http://koufuku.jp/cdn/shop/files/2000000090153_2.jpg?v=1765877430&width=480)
![[Pre-owned] PT900 BLACK OPAL PENDANT TOP, 18.85ct, D2.27ct, with Gem Research Japan sorting, 14.0g](http://koufuku.jp/cdn/shop/files/2000000019970_3.jpg?v=1786342750&width=480)
![[Pre-owned] PT900 BLACK OPAL RING BO1.31ct D0.50ct 8.2g #12](http://koufuku.jp/cdn/shop/files/2000000095462_2.jpg?v=1789101190&width=480)
![[Used] PT900 BLACK OPAL RING BO2.90ct D1.65ct CGL Certificate 12.8g #12](http://koufuku.jp/cdn/shop/files/2000000092874_3.jpg?v=1783490181&width=480)
![[Pre-owned] PT900 BLACK OPAL RING BO3.48ct D2.00ct with GRJ Sorting, 11.8g, Size 12](http://koufuku.jp/cdn/shop/files/DSC_6311.jpg?v=1771668261&width=480)
![[Pre-owned] PT900 BLACK OPAL RING BO3.51ct D1.38ct 13.8g #10](http://koufuku.jp/cdn/shop/files/DSC_4703.jpg?v=1777278503&width=480)
![[Pre-owned] PT900 BLACK OPAL RING BO5.00ct D0.17ct 10.4g #6](http://koufuku.jp/cdn/shop/files/2000000017594_2.jpg?v=1768806608&width=480)
![[Pre-owned] PT900 BLACK OPAL RING BO7.48ct D0.70ct with Appraisal Report, 9.4g, Size 12](http://koufuku.jp/cdn/shop/files/2000000064062_3.jpg?v=1765877332&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO 3.20ct, D 1.78ct, 12g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000013916_3.jpg?v=1741930768&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO1.61ct, D1.44ct, with Sorting, 12.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000019833_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO1.65ct D0.56ct 8.4g #10](http://koufuku.jp/cdn/shop/files/2000000088020_2.jpg?v=1760667250&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO2.452ct D0.35ct with GRJ Sorting 6.8g #11](http://koufuku.jp/cdn/shop/files/2000000019253_3.jpg?v=1767586070&width=480)
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![[Pre-owned] PT900 Black Opal Ring BO2.81ct D1.30ct 13.2g #12](http://koufuku.jp/cdn/shop/files/2000000087481_2.jpg?v=1752392450&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO3.29ct D0.67ct, CGL Sorting included, 8.7g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000014845_3.jpg?v=1763175990&width=480)
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![[Pre-owned] PT900 Black Opal Ring, BO 0.70ct, D 0.25ct, 5.1g, Size 14](http://koufuku.jp/cdn/shop/files/2000000068565_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO1.06ct, D0.61ct, with GRJ Grading Report, 6.2g, Size 13](http://koufuku.jp/cdn/shop/files/2000000012704_3.jpg?v=1765161777&width=480)
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![[Pre-owned] PT900 BLACK OPAL Ring BO3.16ct D1.03ct, with appraisal report, 9.0g, size #10](http://koufuku.jp/cdn/shop/files/2000000023267_4.jpg?v=1763175991&width=480)
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![[Pre-owned] PT900 Black Opal Ring BO3.45ct D0.62ct 4.7g #16.5](http://koufuku.jp/cdn/shop/files/2000000018195_2.jpg?v=1766219128&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO 3.47ct, D 1.16ct, 10.3g, Size 12](http://koufuku.jp/cdn/shop/files/2000000094700_2.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO4.47ct D0.53ct 11.0g 14.5](http://koufuku.jp/cdn/shop/files/2000000098845_2.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 BLACK OPAL Ring BO4.65ct D0.34ct 11.6g #15](http://koufuku.jp/cdn/shop/files/2000000043142_2.jpg?v=1763175991&width=480)
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![[Pre-owned] PT900 Black Opal Ring, BO5.43ct D1.17ct, 10.4g, Size 14.5](http://koufuku.jp/cdn/shop/files/2000000019758_2.jpg?v=1763175991&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)