Showing 1288 products
![[Pre-owned] 18K Yellow Gold 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] 18K Yellow Gold Sapphire Ring, S1.25ct, D0.47ct, CGL Sorting, 8.2g, #8](http://koufuku.jp/cdn/shop/files/2000000043074_3.jpg?v=1759990523&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] 18K Yellow Gold Sapphire and 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)
![[Pre-owned] 18K Yellow Gold South Sea Pearl Ring, 13.5mm, with Certificate of Authenticity, 13.8g, #14](http://koufuku.jp/cdn/shop/files/2000000043159_3.jpg?v=1769398106&width=480)
![[Pre-owned] 18K Yellow Gold South Sea Pearl Ring, 12.3mm, 1.50ct, 17.8g, #13.5](http://koufuku.jp/cdn/shop/files/2000000056586_2.jpg?v=1766219022&width=480)
![[Pre-owned] K18YG STAR SAPPHIRE RING Star Sapphire Ring SS1.49ct D0.4 4ct 7.7g #8](http://koufuku.jp/cdn/shop/files/2000000123141_2.jpg?v=1771053915&width=480)
![[Pre-owned] 18K Yellow Gold Star Sapphire Pendant Necklace 15.0g](http://koufuku.jp/cdn/shop/files/2000000024523_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18K Yellow Gold Star Sapphire Ring, SS 0.543ct, D 0.252ct, 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] 18K Yellow Gold Tourmaline Ring, Pink Tourmaline, 27.51ct Tall, 0.64ct Deep, GRJ Sorting, 17.3g, #12](http://koufuku.jp/cdn/shop/files/2000000069722_3.jpg?v=1768444653&width=480)
Sold Out
![[Used] 18K Yellow Gold Tourmaline Round Bead Necklace 29.3g](http://koufuku.jp/cdn/shop/files/2000000040905_2.jpg?v=1765161777&width=480)
![[Pre-owned] 18K Yellow Gold TOURMALINE Black Tourmaline Round Bead Bracelet, 11.8g](http://koufuku.jp/cdn/shop/files/2000000080802_2.jpg?v=1762391062&width=480)
![[Pre-owned] K18YG Green Tourmaline Ring GT1.464ct 5.2g #14 with Certificate of Authenticity](http://koufuku.jp/cdn/shop/files/2000000043449_3.jpg?v=1750926454&width=480)
Sold Out
![[Pre-owned] K18YG Diamond Ring Cat RING 5.1g #12.5](http://koufuku.jp/cdn/shop/files/2000000124483_2.jpg?v=1767586001&width=480)
![[Pre-owned] K18YG Pink Sapphire Ring, PS1.10ct, D1.64ct, 7.3g, #12](http://koufuku.jp/cdn/shop/files/2000000042503_2.jpg?v=1762397786&width=480)
![[Pre-owned] 18K Yellow Gold Morganite Pendant Necklace, M7.40ct, D1.43ct, 24.7g](http://koufuku.jp/cdn/shop/files/2000000117317_2.jpg?v=1765175629&width=480)
![[Used] K18YG Ruby Ring D0.13ct 3.6g #11](http://koufuku.jp/cdn/shop/files/DSC_2038.jpg?v=1761633555&width=480)
![[Used] K18YG Ruby Ring R0.55ct D0.52ct 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000071374_2.jpg?v=1745908638&width=480)
KOUFUKU is an e-commerce site that handles a wide range of products, from jewelry and precious metals to brand bags, brand watches, brand apparel, and tableware. In addition to sales, we also offer a purchase service.
![[Used] 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] K18YG/PT900 OPAL RING Opal Ring OP 3.18ct D 0.07ct 7.0g #12](http://koufuku.jp/cdn/shop/files/2000000037332_2.jpg?v=1768806608&width=480)
![[Pre-owned] K18YG/PT900 AKOYA PEARL BROACH Akoya pearl pendant brooch, P7.8-8.3mm, D0.22, 29.2g](http://koufuku.jp/cdn/shop/files/2000000041162_2.jpg?v=1768444828&width=480)
![[Used] PT900 SAPPHIRE RING Sapphire Ring S2.57ct D1.51ct 14.3g #15](http://koufuku.jp/cdn/shop/files/2000000071954_2.jpg?v=1768882396&width=480)
![[Pre-owned] MIKIMOTO PT950 ALEXANDRITE RING, A 0.42ct, D 0.62ct, 6.1g, #15, ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000123844_3.jpg?v=1768882396&width=480)
