Showing 1964 products
![[Pre-owned] K18PG DIAMOND RING D0.05ct 6.4g #16.5](http://koufuku.jp/cdn/shop/files/2000000112466_2.jpg?v=1766221259&width=480)
![[Pre-owned] K18WG Diamond Ring D1.95ct 7.1g #12](http://koufuku.jp/cdn/shop/files/2000000039015_2.jpg?v=1766221258&width=480)
![[Pre-owned] SHOW YAMAGATA 18K White Gold Diamond Ring, D0.25ct, with Certificate of Authenticity, 9.9g, Size 17](http://koufuku.jp/cdn/shop/files/2000000040981_2.jpg?v=1766221259&width=480)
SHOW YAMAGATA
[Pre-owned] SHOW YAMAGATA 18K White Gold Diamond Ring, D0.25ct, with Certif[...]
$1,803.00
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![[Pre-owned] K18WG Mozambican Unheated Ruby Ring R3.02ct D1.36ct with GRS Certificate, 6.7g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000092713_3.jpg?v=1766221258&width=480)
![[Pre-owned] PT900 RUBY RING R0.56ct D0.08ct 4.9g #11](http://koufuku.jp/cdn/shop/files/2000000117423_2.jpg?v=1766221258&width=480)
![[Pre-owned] K18WG Black Opal Ring BO3.80ct D0.58ct 5.4g #12](http://koufuku.jp/cdn/shop/files/2000000069890_2.jpg?v=1766219128&width=480)
![[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 Diamond Ring D0.44ct 15.1g #14](http://koufuku.jp/cdn/shop/files/2000000124421_2.jpg?v=1766219119&width=480)
![[Pre-owned] PT900 JADEITE Ring D0.35ct 6.5g #8.5](http://koufuku.jp/cdn/shop/files/2000000016665_2_4d7e3832-8d06-4d3f-9ee2-bd8a07e79e26.jpg?v=1766219119&width=480)
![[Pre-owned] K18YG/PT900 WHITE OPAL Ring OP1.09ct D0.28ct 7.7g #14](http://koufuku.jp/cdn/shop/files/2000000037905_2.jpg?v=1766219054&width=480)
![[Pre-owned] K18YG Sapphire Purple Sapphire Ring PS0.41ct D0.43ct CGL Sorting 6.9g #11.5](http://koufuku.jp/cdn/shop/files/2000000108506_3.jpg?v=1766219043&width=480)
![[Pre-owned] PT900 DIAMOND Men's Ring D0.43ct 18.9g #17](http://koufuku.jp/cdn/shop/files/2000000106366_2.jpg?v=1766219043&width=480)
![[Pre-owned] PT900 Diamond Ring D0.27ct 9.1g #19](http://koufuku.jp/cdn/shop/files/2000000007199_2.jpg?v=1766219043&width=480)
![[Pre-owned] PT900 Diamond V-shape Ring D1.03ct 5.5g #11](http://koufuku.jp/cdn/shop/files/2000000126067_2.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG Sapphire, Green Garnet Ring S0.78ct G0.45ct D1.16ct 10.7g #13](http://koufuku.jp/cdn/shop/files/2000000121376_2.jpg?v=1766219023&width=480)
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![[Pre-owned] K18YG Burmese Unheated Pink Sapphire Ring, PS2.68ct E0.35ct D0.63ct, with GIA Report, 8.0g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000041728_4.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 JADEITE Ring J1.354ct D0.43ct with NGL Sorting, 6.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000028644_3.jpg?v=1766219023&width=480)
![[Pre-owned] K18YG PEARL Ring 10.6mm D0.40ct 8.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000043548_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 Kunzite Ring 4.36ct D0.51ct 11.7g #14](http://koufuku.jp/cdn/shop/files/2000000106137_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 JADEITE Ring J5.606ct D0.11ct with Sorting Certificate, 6.5g, Size 10](http://koufuku.jp/cdn/shop/files/2000000126142_3.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 MEXICO OPAL Ring OP2.70ct D0.39ct 8.2g #15](http://koufuku.jp/cdn/shop/files/2000000015378_2.jpg?v=1766219023&width=480)
![[Pre-owned] PT900 Opal Cat's Eye Ring, OC3.94ct, D0.44ct, 9.0g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000103600_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 JADEITE Ring J2.01ct D1.26ct 7.6g #9](http://koufuku.jp/cdn/shop/files/2000000021782_2.jpg?v=1766219023&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)
