Showing 1796 products
![[Pre-owned] PT900 TOURMALINE Ring T7.24ct D0.22ct 10.1g #12](http://koufuku.jp/cdn/shop/files/2000000113920_2.jpg?v=1765175629&width=480)
![[Pre-owned] PT900 Red Tourmaline (Rubellite) Ring 1.64ct, D0.52ct, with GRJ Sorting, 12.4g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000049632_3.jpg?v=1765877430&width=480)
![[Pre-owned] PT900 WHITE OPAL Ring OP4.30ct D0.59ct 11.9g #11](http://koufuku.jp/cdn/shop/files/2000000011325_2.jpg?v=1760667250&width=480)
![[Pre-owned] PT900 White Opal Ring OP0.80ct D0.30ct 5.9g #10](http://koufuku.jp/cdn/shop/files/2000000071749_2.jpg?v=1768800609&width=480)
![[Pre-owned] Pt900 Aquamarine Ring A2.20ct D0.40ct 10.0g #12 with CGL Sorting](http://koufuku.jp/cdn/shop/files/2000000054551_8.jpg?v=1742268292&width=480)
![[Pre-owned] PT900 Alexandrite Ring A0.22ct D0.50ct with CGL Sorting, 6.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000068572_2.jpg?v=1745901847&width=480)
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![[Pre-owned] PT900 Alexandrite Ring, A0.73ct D0.33ct, includes Gem Research Japan sorting, size 11](http://koufuku.jp/cdn/shop/files/2000000021812_3.jpg?v=1760667250&width=480)
![[Pre-owned] PT900 Diamond Ring 0.537ct I Color VS2 Class Good Cut CGL Sorting 4.4g #11](http://koufuku.jp/cdn/shop/files/2000000088587_3.jpg?v=1750401687&width=480)
![[Pre-owned] PT900 Diamond Ring 0.613ct F SI2 Good, with CGL Sorting, 4.5g, Size 11](http://koufuku.jp/cdn/shop/files/2000000012544_3.jpg?v=1750143322&width=480)
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![[Pre-owned] PT900 Diamond Ring 1.002ct D VS1 Excellent D0.215ct with CGL Sorting, #12, 5.6g](http://koufuku.jp/cdn/shop/files/2000000078267_3.jpg?v=1760667250&width=480)
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![[Pre-owned] PT900 Treated Blue & Colorless Diamond Ring TB0.63ct D1.56ct 13.1g #10](http://koufuku.jp/cdn/shop/files/2000000010113_2.jpg?v=1750401687&width=480)
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![[Pre-owned] PT900 Burmese Ruby Ring R0.99ct D0.60ct #12 4.8g with GIA Origin Report](http://koufuku.jp/cdn/shop/files/2000000011691_3.jpg?v=1744949476&width=480)
![[Pre-owned] Pt900 Burmese Unheated Ruby Ring, R2.09ct, D0.80ct, with GIA Origin Report and Appraisal, 6.9g, Size #12](http://koufuku.jp/cdn/shop/files/2000000022765_3.jpg?v=1744618053&width=480)
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![[Pre-owned] Pt900 Ruby Ring D0.15ct R0.17ct 10.2g #10.5](http://koufuku.jp/cdn/shop/files/13473_01_4ee0628a-3bc2-41b9-a004-efce4cc98be0.jpg?v=1743141413&width=480)
![[Pre-owned] PT900 Ruby Ring R0.52ct D0.51ct #8 5.5g](http://koufuku.jp/cdn/shop/files/70933_01.jpg?v=1751706081&width=480)
![[Pre-owned] PT900/K18 Red Spinel Ring, RS 0.231ct, D 0.04ct, with NGL Certificate, 4.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000087214_3.jpg?v=1752392450&width=480)
![[Pre-owned] PT900/K18 RUBY RING Cabochon Cut Ruby Ring R9.79ct D1.806ct 14.4g #13.5](http://koufuku.jp/cdn/shop/files/2000000113869_3.jpg?v=1789103104&width=480)
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![[Pre-owned] PT900/K18 RUBY Burmese Ruby Ring R2.20ct D0.29ct with GIA Report, 11.5g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000088945_4.jpg?v=1766219022&width=480)
![[Pre-owned] PT900/K18 Spinel Red Spinel Ring RS0.762ct D0.94ct CGL Sorting 7.4g #10.5](http://koufuku.jp/cdn/shop/files/2000000005935_3.jpg?v=1744858305&width=480)
![[Pre-owned] PT900/K18YG DIAMOND RING D0.76ct 10.5g #13](http://koufuku.jp/cdn/shop/files/2000000130385_2.jpg?v=1771658187&width=480)
![[Pre-owned] PT900/K18YG DIAMOND RING D1.035ct 7.3g #12](http://koufuku.jp/cdn/shop/files/2000000047843_2.jpg?v=1768444653&width=480)
![[Pre-owned] PT900/K18YG DIAMOND RING D3.00ct 13.8g #12](http://koufuku.jp/cdn/shop/files/2000000072821_2.jpg?v=1768882395&width=480)
![[Pre-owned] PT900/K18YG Diamond Ring D0.59ct 8.1g #8.5](http://koufuku.jp/cdn/shop/files/2000000126609_2.jpg?v=1767586002&width=480)
![[Pre-owned] PT900/K18YG DIAMOND Ring 0.426ct 3.1g #7](http://koufuku.jp/cdn/shop/files/2000000099286_2.jpg?v=1765877331&width=480)
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![[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)