Showing 1961 products
![[Pre-owned] K18WG Mozambique Unheated Ruby Pendant/Ring R2.08ct D1.32ct with AIGS "Pigeon Blood" Certificate, 7.4g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000090559_4.jpg?v=1765012877&width=480)
![[Pre-owned] HOSEHESS K18WG DIAMOND Diamond Pendant Necklace D2.08ct 12.9g ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000072548_2.jpg?v=1765012877&width=480)
![[Pre-owned] K18YG Garnet Ring G1.26ct D0.61ct 6.7g #17.5](http://koufuku.jp/cdn/shop/files/2000000071763_2.jpg?v=1765012878&width=480)
![[Pre-owned] PT850 Black Opal Pendant Necklace 2.72ct D0.51ct 8.3g](http://koufuku.jp/cdn/shop/files/2000000058566_2.jpg?v=1765012877&width=480)
![[Pre-owned] PT900 Garnet Ring G2.01ct D0.25ct 9.1g #10](http://koufuku.jp/cdn/shop/files/2000000006697_2.jpg?v=1765012877&width=480)
![[Pre-owned] K18WG Mozambique Unheated Ruby Ring R3.03ct D1.13ct GRS Certified, 8.0g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000034348_4.jpg?v=1765012878&width=480)
![[Pre-owned] PT900 Diamond V-shape Ring D0.80ct 4g #11](http://koufuku.jp/cdn/shop/files/2000000010021_2.jpg?v=1765012877&width=480)
![[Pre-owned] K18WG Citrine Ring, C4.02ct, D0.16ct, with Appraisal Report, 7.90g, #8](http://koufuku.jp/cdn/shop/files/2000000044309_3.jpg?v=1765012877&width=480)
![[Pre-owned] K18YG RUBY RING R0.45ct D0.33ct 7.6g #14](http://koufuku.jp/cdn/shop/files/2000000116488_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18YG RUBY RING R1.87ct with Appraisal Certificate, 6.3g, Size 12.5](http://koufuku.jp/cdn/shop/files/DSC_3923.jpg?v=1769670683&width=480)
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![[Pre-owned] K18YG Ruby Ring R0.61ct D0.38ct 6.3g #8](http://koufuku.jp/cdn/shop/files/2000000052793_2.jpg?v=1764915892&width=480)
![[Pre-owned] CHAUMET Hortensia K18PG Opal Pendant Necklace 3.9g](http://koufuku.jp/cdn/shop/files/2000000027616_2.jpg?v=1764915891&width=480)
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![[Pre-owned] K18YG Ruby Ring R0.68ct D0.28ct 5.7g #9.5](http://koufuku.jp/cdn/shop/files/2000000105574_2.jpg?v=1764915892&width=480)
![[Pre-owned] MIKIMOTO K18WG Akoya Pearl Pendant Necklace, 5.1mm - 5.8mm, 7.6g, ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000016894_2.jpg?v=1764915891&width=480)
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![[Pre-owned] K18YG/PT950 Ruby Ring D0.03ct 2.3g](http://koufuku.jp/cdn/shop/files/2000000099453_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18YG Ruby Ring R0.65ct D0.80ct 7.5g #10](http://koufuku.jp/cdn/shop/files/2000000117508_2.jpg?v=1764915892&width=480)
![Used] K18WG RUBY NECKLACE Untreated Ruby Necklace 1.05ct D0.52ct "Pigeon Blood" AIGS Gemstone Report 3.2g](http://koufuku.jp/cdn/shop/files/2000000050805_4.jpg?v=1764915891&width=480)
![[Pre-owned] K18YG Ruby Ring R0.96ct D0.70ct 6.7g #12](http://koufuku.jp/cdn/shop/files/2000000040110_2.jpg?v=1764915891&width=480)
![[Pre-owned] K18WG Heated Ruby Ring, R1.18ct D0.53ct, AIGS Pigeon Blood, with Appraisal Certificate, 3.2g, Size 14](http://koufuku.jp/cdn/shop/files/2000000036045_4.jpg?v=1764830345&width=480)
![[Pre-owned] K18WG Burmese Ruby Ring R1.05ct D0.50ct with AIGS Pigeon Blood Certificate, 3.0g, Size 14](http://koufuku.jp/cdn/shop/files/2000000047935_4.jpg?v=1764830345&width=480)
![[Pre-owned] K18WG Emerald Cat's Eye Ring EC0.68ct D0.33ct 3.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000003016_2.jpg?v=1764830345&width=480)
![[Pre-owned] K18YG Ruby/Diamond Pendant Necklace R0.21ct D0.81ct 7.2g](http://koufuku.jp/cdn/shop/files/2000000058283_2.jpg?v=1764830345&width=480)
![[Pre-owned] K18WG Heated Ruby Ring, R1.03ct D0.19ct, with AIGS Pigeon Blood Certificate, 3.0g, Size 14](http://koufuku.jp/cdn/shop/files/2000000035925_4.jpg?v=1764830345&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)