Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] K18WG STAR SAPPHIRE RING Star Sapphire Ring SS4.90ct D0.55ct 5.8g #14](http://koufuku.jp/cdn/shop/files/2000000039565_2.jpg?v=1768800609&width=480)
![[Pre-owned] K18WG OPAL RING Opal Ring BO3.10ct D0.14ct 4.8g #13](http://koufuku.jp/cdn/shop/files/2000000036663_2.jpg?v=1768800609&width=480)
![[Pre-owned] K18WG OPAL Black Opal Ring, BO 1.50ct, D 0.38ct, 3.5g, #13.5](http://koufuku.jp/cdn/shop/files/2000000047874_2.jpg?v=1768800609&width=480)
![[Pre-owned] PT900 SAPPHIRE RING S1.35ct D0.65ct NGL Certificate 13.0g #14](http://koufuku.jp/cdn/shop/files/2000000018959_2.jpg?v=1768800610&width=480)
![[Pre-owned] PT900 BLACK OPAL RING, BO 3.48ct, D 2.00ct, GRJ sorting, 11.8g, #12](http://koufuku.jp/cdn/shop/files/DSC_6311.jpg?v=1771668261&width=480)
![[Used] PT900 Jadeite Ring, Jadeite 1.51ct, Diameter 0.24ct, 5.5g, #10.5](http://koufuku.jp/cdn/shop/files/2000000065878_2.jpg?v=1768806607&width=480)
![[Used] PT900 Diamond Ring, 0.330ct, D0.55ct, 2.3g, #8](http://koufuku.jp/cdn/shop/files/2000000121956_2.jpg?v=1768806607&width=480)
![[Pre-owned] PT900 Jadeite Ring, Jadeite 3.25ct, Diameter 0.31ct, CGL Sorting, 5.7g, #17.5](http://koufuku.jp/cdn/shop/files/2000000022192_3.jpg?v=1768806607&width=480)
![[Pre-owned] K18WG JADEITE RING Jadeite Ring Jadeite 1.848ct Diameter 0.45ct 3.3g #13](http://koufuku.jp/cdn/shop/files/2000000040783_2.jpg?v=1768806607&width=480)
![[Used] PT900 Garnet Ring, G3.66ct, D1.51ct, 19.7g, #16](http://koufuku.jp/cdn/shop/files/2000000014883_2.jpg?v=1768806608&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.
![[Pre-owned] DIOR K18YG YELLOW SAPPHIRE RING Yellow Sapphire/Chalcedony Ring 39.1g #10 ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000006338_2.jpg?v=1768806608&width=480)
![[Used] PT900 BLACK OPAL RING Black Opal Ring, BO 5.00ct, D 0.17ct, 10.4g, #6](http://koufuku.jp/cdn/shop/files/2000000017594_2.jpg?v=1768806608&width=480)
![[Pre-owned] K18WG BLACK OPAL RING Black Opal Ring BO1.5 D0.49ct 5.3g](http://koufuku.jp/cdn/shop/files/2000000042114_2.jpg?v=1768806608&width=480)
![[Used] K18WG JADEITE RING Jadeite Ring Jadeite 5.73ct Diameter 0.57ct 5.6g #13](http://koufuku.jp/cdn/shop/files/2000000034430_2.jpg?v=1768806607&width=480)
![[Used] K18WG JADEITE RING Jadeite Ring Jadeite 3.222ct Diameter 0.34ct 3.2g #13](http://koufuku.jp/cdn/shop/files/2000000039428_2.jpg?v=1768806608&width=480)
![[Used] PT900 Jadeite Ring, D0.30ct, Nihon Hokyo Sorting, 6.8g, #12](http://koufuku.jp/cdn/shop/files/2000000064123_3.jpg?v=1768806607&width=480)
![[Used] K18YG PEARL RING Pearl Ring P9.2mm P9.2mm D 1.13ct 10.8g #16](http://koufuku.jp/cdn/shop/files/2000000031095_2.jpg?v=1768806608&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 GOLDEN PEARL RING Golden Pearl Ring P14.5mm D1.03ct 11.4g #12](http://koufuku.jp/cdn/shop/files/2000000058177_2.jpg?v=1768806608&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)
