Showing 1787 products
![[Pre-owned] K18YG Sapphire Ring S1.10ct D0.13ct 4.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000106595_2.jpg?v=1759988718&width=480)
![Used] K18YG Sapphire Ring S1.10ct D0.23ct 4.9g #12](http://koufuku.jp/cdn/shop/files/2000000047393_8.jpg?v=1777881349&width=480)
![[Pre-owned] K18YG Sapphire Ring S1.13ct D0.93ct 7.3g #10.5](http://koufuku.jp/cdn/shop/files/2000000069272_2.jpg?v=1759988718&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring S1.90ct D0.20ct 4.9g #15](http://koufuku.jp/cdn/shop/files/2000000075518_2.jpg?v=1752392449&width=480)
![[Pre-owned] K18YG Sapphire, Green Garnet Ring S0.78ct G0.45ct D1.16ct 10.7g #13](http://koufuku.jp/cdn/shop/files/2000000121376_2.jpg?v=1766219023&width=480)
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![[Pre-owned] K18YG SOUTH SEA PEARL RING 13.2mm P, 1.46ct D, 14.8g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000057033_2.jpg?v=1771658188&width=480)
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![[Pre-owned] K18YG South Sea Pearl Ring P13.5mm, with appraisal report, 13.8g, Size 14](http://koufuku.jp/cdn/shop/files/2000000043159_3.jpg?v=1769398106&width=480)
![[Pre-owned] K18YG SOUTH SEA PEARL RING White Pearl Ring P12.4mm D2.01ct 10.8g #9.5](http://koufuku.jp/cdn/shop/files/2000000093390_2.jpg?v=1771658298&width=480)
![[Pre-owned] K18YG South Sea White Pearl Ring P12.3mm D1.50ct 17.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000056586_2.jpg?v=1766219022&width=480)
![Used] K18YG STAR SAPPHIRE PENDANT NECKLACE 15.0g](http://koufuku.jp/cdn/shop/files/2000000024523_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG STAR SAPPHIRE RING SS1.49ct D0.44ct 7.7g #8](http://koufuku.jp/cdn/shop/files/2000000123141_2.jpg?v=1771053915&width=480)
![[Pre-owned] K18YG Star Sapphire Ring SS0.543ct D0.252ct 3.0g #10.5](http://koufuku.jp/cdn/shop/files/2000000115160_2.jpg?v=1762397786&width=480)
![[Pre-owned] K18YG Star Sapphire Ring SS1.56ct D0.52ct 8.7g #14](http://koufuku.jp/cdn/shop/files/2000000046945_2.jpg?v=1765161894&width=480)
![[Pre-owned] K18YG Pink Tourmaline Ring, T27.51ct, DD0.64ct, with GRJ Grading Report, 17.3g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069722_3.jpg?v=1768444653&width=480)
![[Pre-owned] K18YG Tourmaline Rubellite (Red Tourmaline) Pendant Necklace RT6.445ct D1.98ct 13.7g](http://koufuku.jp/cdn/shop/files/2000000058276_2.jpg?v=1762397785&width=480)
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![[Pre-owned] K18YG Tourmaline Bead Necklace 29.3g](http://koufuku.jp/cdn/shop/files/2000000040905_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18YG Tourmaline Black Tourmaline Bead Bracelet 11.8g](http://koufuku.jp/cdn/shop/files/2000000080802_2.jpg?v=1762391062&width=480)
![[Pre-owned] K18YG Turquoise Pearl Earrings T1.2ct D0.02ct 4.8g](http://koufuku.jp/cdn/shop/files/2000000129877_2.jpg?v=1771658081&width=480)
![Used] K18YG YELLOW SAPPHIRE RING Bi-Color Sapphire Ring S2.618ct D0.93ct 8.9g #12](http://koufuku.jp/cdn/shop/files/2000000044224_2.jpg?v=1771814675&width=480)
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![[Pre-owned] K18YG Green Tourmaline Ring, GT1.464ct, 5.2g, #14, with Identification Report](http://koufuku.jp/cdn/shop/files/2000000043449_3.jpg?v=1750926454&width=480)
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![[Pre-owned] K18YG Diamond Cat Ring, 5.1g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000124483_2.jpg?v=1767586001&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] K18YG Morganite Pendant Necklace M7.40ct D1.43ct 24.7g](http://koufuku.jp/cdn/shop/files/2000000117317_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18YG Freshwater Pearl Ring 3.5mm-6.5mm D0.21ct 9.4g #10.5](http://koufuku.jp/cdn/shop/files/2000000042565_2.jpg?v=1746162128&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)