Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] Pt900 Aquamarine Ring A2.20ct D0.40ct 10.0g #12 CGL sorting included](http://koufuku.jp/cdn/shop/files/2000000054551_8.jpg?v=1742268292&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring S1.30ct Mystery Setting 2.9g #16](http://koufuku.jp/cdn/shop/files/2000000031309_2.jpg?v=1750208031&width=480)
![[Used] PT900 SAPPHIRE Ring S2.10ct D0.40ct 6.5g #12](http://koufuku.jp/cdn/shop/files/2000000000275_2.jpg?v=1744858472&width=480)
![[Used] K18YG RUBY Ruby Ring R1.81ct D1.40ct GRJ Sorting 15.1g #13](http://koufuku.jp/cdn/shop/files/2000000069715_8.jpg?v=1745911847&width=480)
![[Used] PT900 RUBY Ruby Ring R0.43ct R0.34ct D0.21ct 7g #12.5](http://koufuku.jp/cdn/shop/files/86019_01.jpg?v=1751706059&width=480)
![[Used] K18WG RUBY Ruby Ring R2.45ct D0.76ct Japan Gemstone Association Sorting 4.9g #12.5](http://koufuku.jp/cdn/shop/files/2000000071275_8.jpg?v=1748238748&width=480)
![[Used] K18WG RUBY Ruby Ring Mystery Setting R5.30ct D1.10ct 11.6g #12](http://koufuku.jp/cdn/shop/files/2000000084435_2.jpg?v=1745911148&width=480)
![[Used] PT850 RUBY Ruby Ring R0.90ct D0.84ct GGS 6.3g #15](http://koufuku.jp/cdn/shop/files/2000000071077_2.jpg?v=1745909490&width=480)
![[Used] PT900 RUBY Ruby Ring R0.54ct D0.35ct Certificate included 4.9g #6.5](http://koufuku.jp/cdn/shop/files/2000000070537_3.jpg?v=1745909411&width=480)
![[Used] PT900 Ruby Ring R0.52ct D0.51ct #8 5.5g](http://koufuku.jp/cdn/shop/files/70933_01.jpg?v=1751706081&width=480)
![[Used] K18YG Ruby Ring R0.55ct D0.52ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000071374_2.jpg?v=1745908638&width=480)
![[Used] PT900 Alexandrite Ring A0.22ct D0.50ct Central Gem Laboratory Sorting 6.7g #12](http://koufuku.jp/cdn/shop/files/2000000068572_2.jpg?v=1745901847&width=480)
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![[Used] PT900 Chrysoberyl Cat's Eye Ring CE2.51ct D0.32ct Central Gem Laboratory Sorting 4.8g #10.5](http://koufuku.jp/cdn/shop/files/2000000019123_3.jpg?v=1745901753&width=480)
![[Used] PT900 Diamond Ring 0.613ct F SI2 Good Central Gem Laboratory Sorting 4.5g #11](http://koufuku.jp/cdn/shop/files/2000000012544_3.jpg?v=1750143322&width=480)
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![[Used] K18YG Garnet Ring G11.42ct D0.72ct with Gem Research Japan Sorting 14.6g #14](http://koufuku.jp/cdn/shop/files/2000000073583_2.jpg?v=1745901557&width=480)
![[Used] PT900 Ruby Unheated Ruby Ring R1.297ct D0.832ct R0.643ct GIA Certificate Included 10.9g](http://koufuku.jp/cdn/shop/files/2000000068664_3.jpg?v=1744950753&width=480)
![[Used] K18WG Burmese unheated ruby ring R0.71ct D0.50ct #8.5 GIA certificate of origin included 2.4g](http://koufuku.jp/cdn/shop/files/2000000068381_3.jpg?v=1744950294&width=480)
![[Used] PT900 Burmese Ruby Ring R0.99ct D0.60ct #12 4.8g GIA Certificate of Origin](http://koufuku.jp/cdn/shop/files/2000000011691_3.jpg?v=1744949476&width=480)
![[Used] PT900 SAPPHIRE Sapphire Ring S0.37ct D0.30ct 3.4g #8](http://koufuku.jp/cdn/shop/files/2000000066516_2.jpg?v=1744892625&width=480)
![[Used] K18WG GARNET Green Garnet Ring GG0.45ct D0.25ct 5.2g #12](http://koufuku.jp/cdn/shop/files/2000000075143_2.jpg?v=1744892545&width=480)
![[Used] K18 GARNET Green Garnet Ring GG2.08ct D0.50ct 6.4g #12](http://koufuku.jp/cdn/shop/files/2000000070698_2.jpg?v=1744890572&width=480)
![[Used] PT900 SAPPHIRE Sapphire Ring S1.12ct D0.28ct 9.2g #11.5](http://koufuku.jp/cdn/shop/files/2000000018485_2.jpg?v=1744889949&width=480)
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![[Used] PT900 RUBY Ruby Ring R1.05ct D0.45ct 6.8g #13 Made in Mozambique Comes with GIA Certificate of Origin](http://koufuku.jp/cdn/shop/files/2000000015392_3.jpg?v=1744859133&width=480)
![[Used] 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)
![[Used] PT900 SAPPHIRE RING Sapphire Ring S2.57ct D1.51ct 14.3g #15](http://koufuku.jp/cdn/shop/files/2000000071954_2.jpg?v=1768882396&width=480)
![[Pre-owned] MIKIMOTO PT950 ALEXANDRITE RING, A 0.42ct, D 0.62ct, 6.1g, #15, ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000123844_3.jpg?v=1768882396&width=480)
