Showing 1961 products
![[Used] K18WG NO HEAT RUBY RING Non-heated Ruby Ring R1.04ct D0.50ct AIGS Pigeon Blood Certificate 3.3g #13.5](http://koufuku.jp/cdn/shop/files/2000000036090_4.jpg?v=1764830276&width=480)
![[Pre-owned] K18YG Ruby Ring R0.65ct D0.33ct 7.8g #12](http://koufuku.jp/cdn/shop/files/2000000044439_2.jpg?v=1764830276&width=480)
![[Pre-owned] K18YG TOURMALINE Necklace 12.1g](http://koufuku.jp/cdn/shop/files/2000000111889_2.jpg?v=1764830276&width=480)
![[Pre-owned] K18/PT900/Enamel Emerald & Diamond Pendant Necklace E0.78ct D1.35ct D0.14ct 17.5g](http://koufuku.jp/cdn/shop/files/2000000018003_3.jpg?v=1763176166&width=480)
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![[Pre-owned] PT950 Black Opal Ring BO4.57ct D2.74ct 9.5g #11.5](http://koufuku.jp/cdn/shop/files/2000000031125_2.jpg?v=1763176059&width=480)
![[Pre-owned] PT950 BLACK OPAL Ring, BO4.35ct, D0.51ct, with Appraisal Certificate, 7.0g, Size 12](http://koufuku.jp/cdn/shop/files/2000000013152_2.jpg?v=1763176059&width=480)
![[Pre-owned] K18WG Sapphire Ring S2.09ct D0.584ct 9.0g #18](http://koufuku.jp/cdn/shop/files/2000000037899_2.jpg?v=1763176059&width=480)
![[Pre-owned] PT900 SAPPHIRE Ring S0.986ct D0.31ct 5.9g #14](http://koufuku.jp/cdn/shop/files/2000000090955_2.jpg?v=1763176059&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO3.74ct D0.14ct, 7.4g, Size #17](http://koufuku.jp/cdn/shop/files/2000000016795_2.jpg?v=1763176059&width=480)
![[Pre-owned] K18/PT900 Black Opal Ring BO2.37ct D1.13ct 10.2g #9](http://koufuku.jp/cdn/shop/files/2000000058368_2.jpg?v=1763176059&width=480)
![[Pre-owned] K18YG Amber Pendant Necklace with Insect Inclusions D0.18ct 12.9g N](http://koufuku.jp/cdn/shop/files/2000000074672_3.jpg?v=1763176220&width=480)
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![[Pre-owned] K18WG Jadeite Jade Ring J4.65ct D0.15ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000036397_2.jpg?v=1763176059&width=480)
![[Pre-owned] PT900 Black Opal Ring, BO 3.47ct, D 1.16ct, 10.3g, Size 12](http://koufuku.jp/cdn/shop/files/2000000094700_2.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 Diamond Ring 0.356ct D0.10 3g #11](http://koufuku.jp/cdn/shop/files/2000000112725_2.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 Unheated Cambodian Sapphire Ring, S1.62ct D1.16ct, GIA Report, 5.4g, Size 11](http://koufuku.jp/cdn/shop/files/2000000007939_3.jpg?v=1763176025&width=480)
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![[Pre-owned] K18WG Sri Lankan Sapphire Ring, S7.24ct, D1.50ct, with GRS Certificate, 7.0g, Size 13](http://koufuku.jp/cdn/shop/files/2000000034386_3.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 Opal Ring OP2.89ct D0.63ct 9.8g #8](http://koufuku.jp/cdn/shop/files/2000000014968_2.jpg?v=1763176025&width=480)
![[Pre-owned] K18WG Emerald Ring E2.18ct D0.55ct 4.4g #13.5](http://koufuku.jp/cdn/shop/files/2000000044101_2.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 Sri Lankan Sapphire Ring S10.07ct D3.26ct with GRS Royal Blue Certificate, 21.5g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000011981_3.jpg?v=1763176025&width=480)
![[Pre-owned] K18WG Diamond Pendant Necklace D1.08ct 6.3g](http://koufuku.jp/cdn/shop/files/2000000021317_2.jpg?v=1763176024&width=480)
![[Pre-owned] K18WG Diamond Ring 7.0g #8.5](http://koufuku.jp/cdn/shop/files/2000000042039_2.jpg?v=1763176024&width=480)
![[Pre-owned] Necklace PT850/PT900 BLACK OPAL Pendant Necklace BO0.89ct D0.58ct CGL Sorting 6.5g](http://koufuku.jp/cdn/shop/files/2000000029221_4.jpg?v=1763176275&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)