Showing 1787 products
![[Pre-owned] K18WG JADEITE Ring J4.04ct D0.57ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000040745_2.jpg?v=1752392568&width=480)
![[Pre-owned] K18WG JADEITE Ring J4.69ct D0.88ct 6.0g #13](http://koufuku.jp/cdn/shop/files/2000000042824_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG Jadeite Ring J4.99ct D0.56ct, with Japan Gem Sciences Association sorting, 6.1g, Size #12](http://koufuku.jp/cdn/shop/files/2000000044187_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG Jadeite Ring J1.70ct D0.43ct 3.5g #16](http://koufuku.jp/cdn/shop/files/2000000040806_2.jpg?v=1762391177&width=480)
![[Pre-owned] K18WG Jadeite Ring J1.93ct D1.66ct 6.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000039411_2.jpg?v=1762316313&width=480)
![[Pre-owned] K18WG Jadeite Ring J10.45ct D0.36ct 6.6g #13](http://koufuku.jp/cdn/shop/files/2000000034263_2.jpg?v=1762391162&width=480)
![[Pre-owned] K18WG Jadeite Ring J4.31ct D1.50ct 5.6g #13.5](http://koufuku.jp/cdn/shop/files/2000000039404_2.jpg?v=1762391100&width=480)
![[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] K18WG Kunzite Ring K6.60ct D0.20ct 9.20g #10.5](http://koufuku.jp/cdn/shop/files/2000000043876_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18WG Kunzite Ring K13.80ct D1.66ct 12.60g #14](http://koufuku.jp/cdn/shop/files/2000000044118_2.jpg?v=1765012877&width=480)
![[Pre-owned] K18WG Mogok Myanmar Ruby Ring, Burmese Mogok Ruby R1.30ct D0.42ct Pigeon Blood, GRS Certificate, 3.6g, Size #14](http://koufuku.jp/cdn/shop/files/2000000038261_3.jpg?v=1768808640&width=480)
![[Pre-owned] K18WG Mozambique Ruby Vivid Red Color Ruby Ring, R2.02ct, D1.12ct, with GRS Certificate, Size #15, 5.8g](http://koufuku.jp/cdn/shop/files/2000000049717_4.jpg?v=1754904959&width=480)
![[Pre-owned] K18WG MULTI STONE RING Y 0.20 S0.25 D0.20 5.1g](http://koufuku.jp/cdn/shop/files/2000000125169_2.jpg?v=1771316784&width=480)
![[Pre-owned] K18WG Multi-Gem Ruby/Sapphire Pendant Necklace D0.45ct 6.5g](http://koufuku.jp/cdn/shop/files/2000000002705_3.jpg?v=1763176127&width=480)
![[Pre-owned] K18WG Multi-Color Stone Pendant Necklace D0.08ct 3.7g](http://koufuku.jp/cdn/shop/files/2000000106984_2.jpg?v=1765175628&width=480)
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![[Used] K18WG MYANMAR RUBY BRACELET Myanmar Ruby Bracelet R5.34ct D1.92ct Authenticated 13.1g 18.5cm](http://koufuku.jp/cdn/shop/files/2000000049762_4.jpg?v=1779337915&width=480)
![[Pre-owned] K18WG Myanmar Ruby Ring, Burmese Ruby R1.01ct D1.63ct Pigeon Blood, with AIGS Certificate, 6.8g, Size 13](http://koufuku.jp/cdn/shop/files/2000000070056_4.jpg?v=1768444671&width=480)
![[Pre-owned] K18WG Myanmar Ruby Ring, Burmese Ruby R1.02ct D2.97ct Pigeon Blood, AIGS Certified, 9.7g, Size 14](http://koufuku.jp/cdn/shop/files/2000000041384_3.jpg?v=1768444692&width=480)
![[Pre-owned] K18WG Myanmar RUBY RING Burmese Ruby Ring R1.19ct D1.30ct Pigeon Blood AIGS Certified 7.1g #13](http://koufuku.jp/cdn/shop/files/2000000041483_3.jpg?v=1768444713&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)