Showing 1787 products
![[Pre-owned] K18WG Boulder Opal Ring OP4.09ct D0.51ct 6.7g #13](http://koufuku.jp/cdn/shop/files/2000000070650_2.jpg?v=1768800609&width=480)
![[Pre-owned] K18WG BOULDER OPAL RING OP5.46ct D0.61ct 6.4g #14](http://koufuku.jp/cdn/shop/files/2000000070612_2.jpg?v=1768800609&width=480)
![[Pre-owned] K18WG Boulder Opal, Pink Sapphire Ring O13.42ct PS0.86ct D0.27ct 10.0g #15](http://koufuku.jp/cdn/shop/files/2000000092607_2.jpg?v=1768446384&width=480)
![[Used] K18WG CATS EYE RING Chrysoberyl Cat's Eye Ring CE1.13ct D0.21ct 3.4g #15](http://koufuku.jp/cdn/shop/files/2000000042725_2.jpg?v=1750472223&width=480)
![[Used] K18WG CATS EYE RING Chrysoberyl Cat's Eye Ring CE1.76ct D0.20ct 3.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000045696_2.jpg?v=1750472222&width=480)
![[Pre-owned] K18WG Cat's Eye Ring, CE4.05ct D0.33ct, 5.1g, #14](http://koufuku.jp/cdn/shop/files/2000000036519_7.jpg?v=1741936274&width=480)
![[Pre-owned] K18WG Cat's Eye Ring CE2.03ct D0.30ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000067629_2.jpg?v=1752392530&width=480)
![[Pre-owned] K18WG Chrysoberyl Cat's Eye Ring, CE1.93ct D0.52ct, 3.3g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000045573_2.jpg?v=1750472223&width=480)
![[Pre-owned] K18WG Chrysoberyl Cat's Eye Ring, CE 2.55ct, D 0.12ct, 3.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000045511_2.jpg?v=1750472222&width=480)
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![[Pre-owned] K18WG Chrysoberyl Cat's Eye Ring, CE 2.32ct, D 0.91ct, 6.1g, Size 13](http://koufuku.jp/cdn/shop/files/2000000034478_2.jpg?v=1763175991&width=480)
![[Pre-owned] K18WG Chalcedony Ruby & Chalcedony Ring R0.17ct C23.65ct D0.28ct 15.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000076720_2.jpg?v=1752392450&width=480)
![[Pre-owned] K18WG Chalcedony Pendant Necklace C21.90ct D0.28ct 7.6g](http://koufuku.jp/cdn/shop/files/2000000076676_2.jpg?v=1762391101&width=480)
![[Pre-owned] K18WG Chrysoberyl Ring C0.808ct D0.35ct 4.5g #14](http://koufuku.jp/cdn/shop/files/2000000079967_3.jpg?v=1765159207&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] K18WG CONCH PEARL NECKLACE Conch Pearl Pendant Necklace CP24.20ct D0.81ct 15.2g](http://koufuku.jp/cdn/shop/files/2000000057125_2.jpg?v=1769398643&width=480)
![[Pre-owned] K18WG CONCH PEARL NECKLACE Conch Pearl Pendant Necklace CP6.37ct D0.29ct 5.6g](http://koufuku.jp/cdn/shop/files/2000000044170_2.jpg?v=1770373846&width=480)
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![[Pre-owned] K18WG DIAMOND BRACELET D2.00ct 12.7g 18cm](http://koufuku.jp/cdn/shop/files/2000000146188_4.jpg?v=1787902732&width=480)
![[Pre-owned] K18WG Diamond Brooch Pendant, D3.15ct, 25.0g](http://koufuku.jp/cdn/shop/files/2000000133065_2.jpg?v=1787905294&width=480)
![[Pre-owned] K18WG DIAMOND EARRING (Clip-on/Pierced) D4.00ct 12.5g](http://koufuku.jp/cdn/shop/files/2000000104805_2.jpg?v=1771480013&width=480)
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] K18WG Diamond Earrings / Clip-on Earrings, 3.95ct, NGL Appraisal, 23.4g](http://koufuku.jp/cdn/shop/files/2000000057354_3.jpg?v=1786344386&width=480)
![[Used] K18WG DIAMOND EARRING Black Diamond/Colorless Diamond Pierced Earrings and Clip-On Earrings D0.11ct D0.11ct D0.10ct D0.10ct 5.9g](http://koufuku.jp/cdn/shop/files/2000000050935_2.jpg?v=1785740126&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)