Gems, Jewelry and Precious Metals
Showing 1386 products
![[Pre-owned] K18WG RUBY RING Unheated Mozambique Ruby Ring R5.47ct D2.36ct 7.0g #11](http://koufuku.jp/cdn/shop/files/2000000034775_3.jpg?v=1765161863&width=480)
![[Pre-owned] 18K Yellow Gold OPAL Boulder Opal Ring, 4.18ct Borealis, 0.11ct Diamond, 11.4g, #12](http://koufuku.jp/cdn/shop/files/2000000105925_2.jpg?v=1765161864&width=480)
![[Pre-owned] PT900 ALEXANDRITE Ring, A1.03ct, D0.60ct, Sorting, 8.3g, #12](http://koufuku.jp/cdn/shop/files/2000000017938_3.jpg?v=1765161865&width=480)
![[Pre-owned] K18/K18WG SAPPHIRE Sapphire Ring, S0.96ct, D0.45ct, 7.3g, #9](http://koufuku.jp/cdn/shop/files/2000000037394_2.jpg?v=1765161864&width=480)
![[Pre-owned] 18K Yellow Gold Moving Diamond Pendant Necklace, D0.565ct, 11.9g](http://koufuku.jp/cdn/shop/files/2000000108513_2.jpg?v=1765161865&width=480)
![[Pre-owned] PT850 Star Sapphire Pendant Necklace, 5.75ct Stainless Steel, 0.51ct Deep, 13.2g](http://koufuku.jp/cdn/shop/files/2000000074542_2.jpg?v=1765161865&width=480)
![[Pre-owned] 18K Yellow Gold Emerald Pendant Necklace, E1.55ct, D0.24ct, 9.1g](http://koufuku.jp/cdn/shop/files/2000000106113_2.jpg?v=1765161865&width=480)
![[Pre-owned] PT850/PT900 BLACK OPAL pendant necklace, BO 0.58ct, D 0.32ct, 4.4g](http://koufuku.jp/cdn/shop/files/2000000013886_2.jpg?v=1765161865&width=480)
![[Pre-owned] K18YG SAPPHIRE RING Sapphire ring S1.05ct D0.30ct 6.1g #12.5](http://koufuku.jp/cdn/shop/files/2000000106533_2.jpg?v=1765161884&width=480)
![[Pre-owned] K18YG SAPPHIRE RING Sapphire Ring S1.59ct S0.91ct D1.62ct 9.3g #11.5](http://koufuku.jp/cdn/shop/files/2000000002477_2.jpg?v=1765161884&width=480)
![[Pre-owned] K18WG DIAMOND Necklace Diamond Pendant Necklace D0.50ct 3.4g](http://koufuku.jp/cdn/shop/files/2000000114170_2.jpg?v=1765161884&width=480)
![[Pre-owned] PT850/PT900 RUBY Ruby Pendant Necklace R0.31ct D0.13ct 5.0g](http://koufuku.jp/cdn/shop/files/2000000114071_2.jpg?v=1765161884&width=480)
![[Used] PT850 necklace 20.9g](http://koufuku.jp/cdn/shop/files/2000000086125_2.jpg?v=1765161885&width=480)
![[Pre-owned] K14WG Garnet Necklace, Garnet Pendant Necklace, Nihokyo Sorting, 2.8g](http://koufuku.jp/cdn/shop/files/2000000114040_3.jpg?v=1765161884&width=480)
![[Used] K18WG SAPPHIRE necklace, S57.00ct, D1.10ct, 38.7g](http://koufuku.jp/cdn/shop/files/2000000017945_2.jpg?v=1765161893&width=480)
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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 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)
