Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] K18 DIAMOND Ring D0.53ct 2.5g #12](http://koufuku.jp/cdn/shop/files/70216_01.jpg?v=1743142006&width=480)
![[Used] K18WG SAPPHIRE Ring S0.27ct D0.28ct 5.2g #14](http://koufuku.jp/cdn/shop/files/81045_01.jpg?v=1743141936&width=480)
![[Used] PT900 SAPPHIRE ring S0.97ct D0.45ct 4.4g #11](http://koufuku.jp/cdn/shop/files/71992_01.jpg?v=1743141901&width=480)
![[Used] K18WG RUBY Ruby Ring R0.68ct D0.33ct 2.9g #14](http://koufuku.jp/cdn/shop/files/69036_01_c42127e3-11c8-40b2-8fad-527280ba9a89.jpg?v=1743141669&width=480)
![[Used] PT900 RUBY Ruby Ring R1.055ct D0.73ct 3.8g #13](http://koufuku.jp/cdn/shop/files/17495_01.jpg?v=1743141577&width=480)
![[Used] PT900 RUBY Ruby Ring R0.67ct D0.28ct 5.1g #12](http://koufuku.jp/cdn/shop/files/18829_01.jpg?v=1743141509&width=480)
![[Used] K18WG BLACK OPAL Black Opal Ring BO4.10ct D0.13ct 3.2g](http://koufuku.jp/cdn/shop/files/2000000045214_7.jpg?v=1741937635&width=480)
![[Used] K18WG SAPPHIRE sapphire ring S2.04ct D0.55ct 4.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000043722_8.jpg?v=1741937169&width=480)
![[Used] K18WG CATS EYE Cat's Eye Ring CE4.05ct D0.33ct 5.1g #14](http://koufuku.jp/cdn/shop/files/2000000036519_7.jpg?v=1741936274&width=480)
![[Used] PT900 CATS EYE Ring CE4.93ct D1.33ct 12.9g](http://koufuku.jp/cdn/shop/files/2000000018638_7.jpg?v=1751594976&width=480)
![[Used] PT900 ALEXANDRITE ring A0.62ct D0.74ct 9.6g GIA certificate included Made in Brazil](http://koufuku.jp/cdn/shop/files/2000000014173_3.jpg?v=1741931451&width=480)
![[Used] PT900 BLACK OPAL Black Opal Ring BO3.20ct D1.78ct 12g #12.5](http://koufuku.jp/cdn/shop/files/2000000013916_3.jpg?v=1741930768&width=480)
![[Used] K18WG RUBY Ruby Ring R1.03ct D0.11 Pigeon Blood AIGS Certificate 2.2g](http://koufuku.jp/cdn/shop/files/2000000035895_3.jpg?v=1740381216&width=480)
![[Used] PT900 JADEITE jadeite ring J2.27ct D0.41ct with GGS sorting 6.3g #9.5](http://koufuku.jp/cdn/shop/files/2000000021942_3.jpg?v=1746157084&width=480)
![[Used] PT900 JADEITE jadeite ring J3.28ct D0.43ct Nihokyo sorting 8.9g #15.5](http://koufuku.jp/cdn/shop/files/2000000075372_3.jpg?v=1746157250&width=480)
![[Used] PT900 JADEITE jadeite ring J1.95ct D0.67ct GRJ sorting included 5.7g #10](http://koufuku.jp/cdn/shop/files/2000000011172_3.jpg?v=1746161116&width=480)
![[Used] K18WG TOPAZ Blue Topaz Ring D0.690ct D1.00ct 16.1g #13](http://koufuku.jp/cdn/shop/files/2000000069661_2.jpg?v=1746161371&width=480)
![[Used] K18WG OPAL Opal Ring 1.06ct 0.08ct 2.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000045535_2.jpg?v=1746161481&width=480)
![[Used] PT900 Tahiti Pearl Ring 10.7mm D0.23ct 6.8g #8](http://koufuku.jp/cdn/shop/files/2000000026343_2.jpg?v=1746161613&width=480)
![[Used] PT900 Tahiti Pearl Tahitian Pearl Ring 10.2mm D0.04ct 5.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000008349_2.jpg?v=1746161717&width=480)
![[Used] PT900 Tahiti Pearl Tahitian Pearl Ring 11.2mm 5.9g #10 with Certificate of Authenticity](http://koufuku.jp/cdn/shop/files/2000000033556_3.jpg?v=1746161823&width=480)
![[Used] K18WG Tahitian pearl ring P9.1mm D0.51ct 5.3g #10](http://koufuku.jp/cdn/shop/files/2000000006437_2.jpg?v=1746161885&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] PT900 AKOYA Akoya pearl ring 7.5mm D0.08ct 5.5g #16](http://koufuku.jp/cdn/shop/files/2000000080949_2.jpg?v=1746161933&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)
