Showing 1964 products
![[Pre-owned] K18YG Freshwater Pearl Ring 3.5mm-6.5mm D0.21ct 9.4g #10.5](http://koufuku.jp/cdn/shop/files/2000000042565_2.jpg?v=1746162128&width=480)
![[Pre-owned] K18YG MABE PEARL Ring 12mm 3.3g #7.5](http://koufuku.jp/cdn/shop/files/2000000080901_2.jpg?v=1746162083&width=480)
![[Pre-owned] K18YG South Sea Pearl Ring 12.6mm 12.8mm 10.8mm 19.5g #12](http://koufuku.jp/cdn/shop/files/2000000071336_2.jpg?v=1746161988&width=480)
![[Pre-owned] PT900 AKOYA Pearl Ring 7.5mm D0.08ct 5.5g #16](http://koufuku.jp/cdn/shop/files/2000000080949_2.jpg?v=1746161933&width=480)
![[Pre-owned] K18WG Tahiti Pearl Ring P9.1mm D0.51ct 5.3g #10](http://koufuku.jp/cdn/shop/files/2000000006437_2.jpg?v=1746161885&width=480)
![[Pre-owned] PT900 Tahiti Pearl Ring 11.2mm 5.9g #10, with appraisal report](http://koufuku.jp/cdn/shop/files/2000000033556_3.jpg?v=1746161823&width=480)
![[Pre-owned] PT900 Tahiti Pearl Ring 10.2mm D0.04ct 5.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000008349_2.jpg?v=1746161717&width=480)
![[Pre-owned] PT900 Tahiti Pearl Ring 10.7mm D0.23ct 6.8g #8](http://koufuku.jp/cdn/shop/files/2000000026343_2.jpg?v=1746161613&width=480)
![[Pre-owned] K18WG Opal Ring 1.06ct 0.08ct 2.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000045535_2.jpg?v=1746161481&width=480)
![[Pre-owned] K18WG Blue Topaz Ring, D0.690ct, D1.00ct, 16.1g, Size 13](http://koufuku.jp/cdn/shop/files/2000000069661_2.jpg?v=1746161371&width=480)
![[Pre-owned] PT900 Jadeite Ring J1.95ct D0.67ct with GRJ Sorting, 5.7g, Size 10](http://koufuku.jp/cdn/shop/files/2000000011172_3.jpg?v=1746161116&width=480)
![[Pre-owned] PT900 JADEITE Ring, J3.28ct, D0.43ct, with Japan Jewelry Association Sorting Report, 8.9g, Size 15.5](http://koufuku.jp/cdn/shop/files/2000000075372_3.jpg?v=1746157250&width=480)
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![[Pre-owned] PT900 JADEITE Ring, J2.27ct, D0.41ct, with GGS Sorting, 6.3g, #9.5](http://koufuku.jp/cdn/shop/files/2000000021942_3.jpg?v=1746157084&width=480)
![[Pre-owned] K18YG Ruby Ring R1.81ct D1.40ct with GRJ Sorting 15.1g #13](http://koufuku.jp/cdn/shop/files/2000000069715_8.jpg?v=1745911847&width=480)
![[Pre-owned] 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)
![[Pre-owned] K18WG Ruby Ring, R2.45ct D0.76ct, Japan Jewelry Association Sorting, 4.9g, Size #12.5](http://koufuku.jp/cdn/shop/files/2000000071275_8.jpg?v=1748238748&width=480)
![[Pre-owned] K18WG Ruby Mystery Setting Ring, R5.30ct, D1.10ct, 11.6g, Size 12](http://koufuku.jp/cdn/shop/files/2000000084435_2.jpg?v=1745911148&width=480)
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![[Pre-owned] PT850 Ruby Ring, R0.90ct D0.84ct, with GGS Certificate, 6.3g, Size 15](http://koufuku.jp/cdn/shop/files/2000000071077_2.jpg?v=1745909490&width=480)
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![[Pre-owned] PT900 RUBY Ring R0.54ct D0.35ct with Identification Report 4.9g #6.5](http://koufuku.jp/cdn/shop/files/2000000070537_3.jpg?v=1745909411&width=480)
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![[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)
![[Used] K18YG RUBY RING R0.55ct D0.52ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000071374_2.jpg?v=1745908638&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 Chrysoberyl Cat's Eye Ring, CE2.51ct, D0.32ct, CGL Sorting, 4.8g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000019123_3.jpg?v=1745901753&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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KOUFUKU is an e-commerce site that offers a wide range of products, including jewelry, precious metals, designer bags, designer watches, designer apparel, and tableware. In addition to retail sales, we also provide purchase services.
![[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)