Gems, Jewelry and Precious Metals
Showing 1386 products
![[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)
![[Used] PT900 DIAMOND Ring D0.27ct 5.7g #10](http://koufuku.jp/cdn/shop/files/2000000009193_2.jpg?v=1765163848&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R0.51ct D0.64ct 4.2g #16](http://koufuku.jp/cdn/shop/files/2000000116457_2.jpg?v=1765163849&width=480)
![[Pre-owned] Naoko Omori K18WG SAPPHIRE & DIAMONDS Sapphire and Diamond Necklace, S5.18cr, D1.10ct, 17.8g](http://koufuku.jp/cdn/shop/files/2000000108285_2.jpg?v=1765163848&width=480)
![[Pre-owned] Mitsuo Kaji K18/PT900 Enamel Diamond Ring, D2.64ct, 16.8g, #14.5, Box/Certificate, One Price](http://koufuku.jp/cdn/shop/files/2000000067056_3.jpg?v=1765163849&width=480)
![[Used] K18WG DIAMOND Necklace D5.10ct 33.4g](http://koufuku.jp/cdn/shop/files/2000000003962_2.jpg?v=1765163849&width=480)
![[Used] PT900 SAPPHIRE Ring, S1.10ct, D0.33ct, 4.9g, #8](http://koufuku.jp/cdn/shop/files/2000000090375_2.jpg?v=1765163848&width=480)
![[Used] PT900 Emerald Ring E3.32ct D1.09ct 6.0g #11](http://koufuku.jp/cdn/shop/files/2000000075099_2.jpg?v=1765163849&width=480)
![[Pre-owned] K18WG SHELL Diamond Pendant Necklace D0.27ct 6.3g](http://koufuku.jp/cdn/shop/files/2000000038780_2.jpg?v=1765163849&width=480)
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![[Used] PT900 Emerald Ring, E1.80ct, Diamond 0.71ct, 7.3g, #12](http://koufuku.jp/cdn/shop/files/2000000077406_2.jpg?v=1765163849&width=480)
![[Used] PT850/PT900 Emerald Pendant Necklace, E0.55ct, D0.24ct, 4.6g](http://koufuku.jp/cdn/shop/files/2000000090160_2.jpg?v=1765163849&width=480)
![[Pre-owned] 18K Yellow Gold Diamond Y-shaped Pendant Necklace, 0.50ct, 8.2g](http://koufuku.jp/cdn/shop/files/2000000003207_2.jpg?v=1765175628&width=480)
![[Pre-owned] PT850/PT900 SAPPHIRE Necklace, Sapphire Pendant Necklace, S0.60ct, D0.14ct, 4.4g](http://koufuku.jp/cdn/shop/files/2000000114200_2.jpg?v=1765175628&width=480)
![[Pre-owned] K18YG RUBY RING Ruby Ring R0.75ct D1.00ct 9.6g #15](http://koufuku.jp/cdn/shop/files/2000000040264_2.jpg?v=1765175628&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] PT900 Star Sapphire Ring, 5.03ct, D0.57ct, 8.8g, #14.5](http://koufuku.jp/cdn/shop/files/2000000089102_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18WG MULTI Multicolor Stone Pendant Necklace D0.08ct 3.7g](http://koufuku.jp/cdn/shop/files/2000000106984_2.jpg?v=1765175628&width=480)
![[Pre-owned] K18WG Aquamarine Ring, Aquamarine 3.82ct, S 1.35ct, D 0.22ct, 8.7g, #14](http://koufuku.jp/cdn/shop/files/2000000042756_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring, S0.89ct, S0.30ct, D1.20ct, 6.4g, #13](http://koufuku.jp/cdn/shop/files/2000000035598_2.jpg?v=1765175629&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)
