Showing 1787 products
![[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] K18WG Black Opal Ring BO1.02ct D0.35ct #13.5 with Appraisal](http://koufuku.jp/cdn/shop/files/2000000036571_3.jpg?v=1750923953&width=480)
![[Pre-owned] K18WG/18KWG Ruby Pendant Necklace, Invisible Setting, R2.60ct, D0.18ct, 7.9g](http://koufuku.jp/cdn/shop/files/2000000099316_2.jpg?v=1765175629&width=480)
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![[Pre-owned] K18WG/K18PG DIAMOND RING D0.14ct 3.8g #10](http://koufuku.jp/cdn/shop/files/2000000033723_2.jpg?v=1771665042&width=480)
![[Pre-owned] K18WG/K18PG Diamond Ring D1.13ct 8.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000133362_2.jpg?v=1771313066&width=480)
![[Pre-owned] K18WG/K18PG Pink & Colorless Diamond Ring PD0.07ct D0.51ct 8.9g #15.5](http://koufuku.jp/cdn/shop/files/2000000038018_2.jpg?v=1766801414&width=480)
![[Pre-owned] K18WG/K18YG Colorless & Yellow Diamond Ring 14.6g #14](http://koufuku.jp/cdn/shop/files/2000000070018_2.jpg?v=1767586001&width=480)
![[Pre-owned] K18WG/PT900 EMERALD NECKLACE Trapiche Emerald Pendant Necklace E15.51ct D0.44ct with Appraisal Report 14.5g](http://koufuku.jp/cdn/shop/files/2000000033372_4.jpg?v=1770373846&width=480)
![[Used] K18WG/PT900 OPAL NECKLACE Black Opal Pendant Necklace BO12.75ct D0.10ct 13.8g](http://koufuku.jp/cdn/shop/files/2000000074436_2.jpg?v=1771814816&width=480)
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![[Pre-owned] K18WG/PT900 Semi-Black Opal Pendant Necklace, BO2.18ct D0.17ct 4.4g](http://koufuku.jp/cdn/shop/files/2000000082851_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18WG/PT900 Ruby Pendant Necklace R0.54ct D0.21ct 3.6g](http://koufuku.jp/cdn/shop/files/2000000014678_2.jpg?v=1765163848&width=480)
![[Pre-owned] K18WG/YG DIAMOND RING Diamond Chain Ring D0.78ct 11.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000047133_2.jpg?v=1771665153&width=480)
![[Pre-owned] K18WG/YG Myanmar (Burma) Unheated Ruby Ring, R1.01ct, Pigeon Blood, GRS Certified, 6.2g, Size #11](http://koufuku.jp/cdn/shop/files/DSC_2047.jpg?v=1775189449&width=480)
![[Pre-owned] K18WG/YG NO HEAT RUBY RING Mozambique Untreated Ruby Ring R2.02ct D1.25ct Pigeon Blood AIGS Certificate 5.1g #15](http://koufuku.jp/cdn/shop/files/2000000038117_3.jpg?v=1768444671&width=480)
![[Pre-owned] K18WG/YG NO HEAT RUBY RING Mozambique Origin Unheated Ruby Ring R3.03ct D1.20ct AIGS Pigeon Blood Gemological Report 8.0g #14.5](http://koufuku.jp/cdn/shop/files/2000000071800_4.jpg?v=1768444692&width=480)
![[Pre-owned] K18WG/YG No-Heat Ruby Ring, Mozambican Untreated Ruby, R1.00ct D1.99ct, GRS Certified, 6.0g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000140070_4.jpg?v=1788154522&width=480)
![[Pre-owned] K18WG/YG Mozambique Unheated Ruby Ring, R3.01ct D1.02ct, AIGS Pigeon Blood, with Certificate, 6.1g, #14](http://koufuku.jp/cdn/shop/files/2000000071817_4.jpg?v=1759735437&width=480)
![[Pre-owned] K18WG/YG Mozambique Unheated Ruby Ring R3.04ct D0.98ct, with AIGS Pigeon Blood Certificate, 5.3g, Size 14.5](http://koufuku.jp/cdn/shop/files/2000000038124_3.jpg?v=1759735436&width=480)
![[Pre-owned] K18WG/YG Unheated Ruby Ring, R2.10ct D1.30ct, with AIGS Pigeon Blood Certificate, 5.3g, #14](http://koufuku.jp/cdn/shop/files/2000000092676_4.jpg?v=1764830303&width=480)
![[Pre-owned] K18WG/YG Blue & Yellow Sapphire Ring, S1.50ct D0.06ct, with NGL Appraisal, 9.3g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000124582_3.jpg?v=1767585996&width=480)
![[Pre-owned] K18WG/YG/PG Prehnite Ring, 11.18ct, S0.95ct, D0.85ct, 14.4g, Size #14](http://koufuku.jp/cdn/shop/files/2000000091662_2.jpg?v=1771665042&width=480)
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![[Pre-owned] K18WG/Shell/Onyx DIAMOND RING D0.29ct D0.13ct 11.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000041155_2.jpg?v=1768806608&width=480)
![[Pre-owned] K18WG/Black Plated GOLDEN PEARL Ring P11.7mm D2.68ct 17.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000042398_2.jpg?v=1752392569&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)