Showing 184 products
![[Pre-owned] POLA K18YG Sapphire, Ruby, Emerald Ring S0.13ct R0.07ct E0.05ct D0.13ct 5.5g #12](http://koufuku.jp/cdn/shop/files/2000000052922_2.jpg?v=1745124569&width=480)
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![[Pre-owned] CHAUMET K18WG Class One Ring, 8.1g, Size 8](http://koufuku.jp/cdn/shop/files/2000000013374_2.jpg?v=1745121267&width=480)
![[Pre-owned] TASAKI K18WG Onyx/Shell Diamond Ring 0.28ct 0.13ct 11.8g #12 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000012780_2.jpg?v=1752770818&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 SAPPHIRE Ring S2.10ct D0.40ct 6.5g #12](http://koufuku.jp/cdn/shop/files/2000000000275_2.jpg?v=1744858472&width=480)
![[Pre-owned] PT900 RUBY Ring R2.525ct D0.72ct #9 7.9g with CGL (Central Gem Laboratory) Sorting](http://koufuku.jp/cdn/shop/files/2000000011943_3.jpg?v=1744858149&width=480)
![[Pre-owned] KABANA 18K Yellow Gold Shell/Onyx Diamond Ring #12.5 8g](http://koufuku.jp/cdn/shop/files/2000000012100_2.jpg?v=1778747398&width=480)
![[Pre-owned] Pt900 Natural Orange Pink Sapphire Ring, S2.13ct D0.94ct, 9.5g, Size 10.5, with GRS Report](http://koufuku.jp/cdn/shop/files/2000000082455_5.jpg?v=1750207998&width=480)
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![[Pre-owned] K18 Diamond Ring D0.53ct 2.5g #12](http://koufuku.jp/cdn/shop/files/70216_01.jpg?v=1743142006&width=480)
![[Pre-owned] PT900 Emerald Ring E0.53ct D0.68ct 5.8g](http://koufuku.jp/cdn/shop/files/2000000021850_8.jpg?v=1752729165&width=480)
![[Pre-owned] PT900 PINK TOURMALINE Ring PT1.58ct D0.20ct 6.76g #12](http://koufuku.jp/cdn/shop/files/82431_01.jpg?v=1743142576&width=480)
![[Pre-owned] PT900 SAPPHIRE Ring S0.97ct D0.45ct 4.4g #11](http://koufuku.jp/cdn/shop/files/71992_01.jpg?v=1743141901&width=480)
![[Pre-owned] TASAKI PT900 Sapphire Ring, S0.95ct, D0.30ct, 4.5g, Size 11](http://koufuku.jp/cdn/shop/files/77260_01_d30ebf56-f36f-4ec5-a044-ce5a4bcd8ea0.jpg?v=1743141759&width=480)
![[Pre-owned] PT900 Alexandrite Ring, A0.62ct, D0.74ct, 9.6g, with GIA Report, Origin: Brazil](http://koufuku.jp/cdn/shop/files/2000000014173_3.jpg?v=1741931451&width=480)
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![[Pre-owned] PT900 Black Opal Ring, BO 3.20ct, D 1.78ct, 12g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000013916_3.jpg?v=1741930768&width=480)
![[Pre-owned] K18WG Ruby Ring, R1.03ct D0.11ct, Pigeon Blood, AIGS Certificate, 2.2g](http://koufuku.jp/cdn/shop/files/2000000035895_3.jpg?v=1740381216&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)