Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] PT900 RUBY Ruby Ring, R0.38ct, D0.30ct, CGL Sorting, 4.6g, #7](http://koufuku.jp/cdn/shop/files/2000000051512_3.jpg?v=1760667250&width=480)
![[Used] PT900 RUBY Ruby Ring in Invisible Setting, R0.47ct, D0.41ct, 8.4g, #12](http://koufuku.jp/cdn/shop/files/2000000075525_2.jpg?v=1760667250&width=480)
![[Used] PT900 TOURMALINE Green Tourmaline Ring, T8.98ct, D0.83ct, 15.4g](http://koufuku.jp/cdn/shop/files/2000000013893_2.jpg?v=1760667250&width=480)
![[Pre-owned] 18K Yellow Gold Ruby & Diamond Ring, R0.16ct, D0.50ct, 6.1g, #9](http://koufuku.jp/cdn/shop/files/2000000047072_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S3.24ct, D0.51ct, 4.5g, #13](http://koufuku.jp/cdn/shop/files/2000000042930_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18YG GARNET Ring 1.18ct D0.03ct 4.9g #10](http://koufuku.jp/cdn/shop/files/2000000047027_2.jpg?v=1760667250&width=480)
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![[Used] PT950 Black Opal Ring, BO1.21ct, D1.11ct, 8.9g, #11.5](http://koufuku.jp/cdn/shop/files/2000000004471_2.jpg?v=1760667250&width=480)
![[Used] PT900/K18YG Garnet Ring 3.5g #7](http://koufuku.jp/cdn/shop/files/2000000037677_2.jpg?v=1760667270&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, CGL Sorting, 3.6g, #12.5](http://koufuku.jp/cdn/shop/files/2000000090146_3.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S2.45ct, D0.62ct, 4.7g, #13.5](http://koufuku.jp/cdn/shop/files/2000000045610_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.83ct, D0.29ct, 3.1g, #12](http://koufuku.jp/cdn/shop/files/2000000036700_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S0.975ct, D0.45ct, with sorting, 2.5g, #13](http://koufuku.jp/cdn/shop/files/2000000089096_3.jpg?v=1760678193&width=480)
![[Used] PT900 Emerald Ring, E2.02ct, D1.69ct, 10g](http://koufuku.jp/cdn/shop/files/2000000011394_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE Ring, SS 2.632ct, D 0.22ct, 2.7g, #13.5](http://koufuku.jp/cdn/shop/files/2000000050409_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S1.18ct, D0.58ct, 3.3g, #12.5](http://koufuku.jp/cdn/shop/files/2000000094342_2.jpg?v=1760678193&width=480)
![[Used] PT950 Tanzanite Ring, T0.64ct, D0.29ct, 4.4g, #11.5](http://koufuku.jp/cdn/shop/files/2000000037417_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18YG SAPPHIRE Ring, S0.76ct, D0.28ct, 9.1g, #13](http://koufuku.jp/cdn/shop/files/2000000106724_2.jpg?v=1760678193&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 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)
