Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Used] K18YG SAPPHIRE NECKLACE Sapphire/Diamond Necklace S24.02ct D3.12ct 42.6g](http://koufuku.jp/cdn/shop/files/2000000023366_2.jpg?v=1771816794&width=480)
Sold Out
![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)
![[Used] K18WG DIAMOND SKULL NECKLACE Black & Colorless Diamond Skull Pendant Necklace 17.0g](http://koufuku.jp/cdn/shop/files/2000000133713_2.jpg?v=1771816795&width=480)
![[Used] K18WG TOURMALINE NECKLACE Pink Tourmaline Pendant Necklace T2.00ct D0.30ct 3.8g](http://koufuku.jp/cdn/shop/files/2000000134109_2.jpg?v=1771816794&width=480)
Sold Out
![[Pre-owned] K18YG RUBY RING R0.448ct D0.46ct 5.5g #12](http://koufuku.jp/cdn/shop/files/DSC_2026_4487a999-4928-4b18-b0f6-2154297d7db9.jpg?v=1775189875&width=480)
Sold Out
![[Used] PT900 NON-HEATED RUBY RING R1.43ct D0.41ct GRS Certificate 6.4g #12](http://koufuku.jp/cdn/shop/files/2000000082394_3.jpg?v=1777280485&width=480)
Sold Out
![[Pre-owned] K18YG Ruby Ring R2.32ct D0.13ct 6.0g #11](http://koufuku.jp/cdn/shop/files/2000000121413_2.jpg?v=1777281401&width=480)
![[Pre-owned] K18YG RUBY RING R1.15ct D0.45ct 7.3g #12](http://koufuku.jp/cdn/shop/files/2000000040165_2.jpg?v=1777281913&width=480)
![[Used] K18WG PHOENIX PEARL PENDANT NECKLACE South Sea Phoenix Pearl Pendant Necklace P15.5mm D0.06ct 24.4g](http://koufuku.jp/cdn/shop/files/2000000098074_2.jpg?v=1777881333&width=480)
![[Used] PT900/K18YG TOURMALINE Pink Tourmaline Ring T1.86ct D0.41ct #10 6.0g](http://koufuku.jp/cdn/shop/files/2000000079127_2.jpg?v=1778737724&width=480)
![[Used] PT900 RUBY RING Thai Ruby Ring R1.20ct D0.45ct GIA/Nihonbokei Appraisal Report 6.5g #10](http://koufuku.jp/cdn/shop/files/2000000133256_4.jpg?v=1777881347&width=480)
![[Used] PT900 SOUTH SEA PEARL RING White South Sea Pearl Ring P14.8mm D0.35ct 16.0g #11](http://koufuku.jp/cdn/shop/files/2000000133782_2.jpg?v=1777881348&width=480)
![[Used] Isako Kikuchi K18WG TOURMALINE RING T2.17ct G 0.14ct 0.06ct 9.6g #15](http://koufuku.jp/cdn/shop/files/2000000122113_2.jpg?v=1778492272&width=480)
![[Used] K18/PT900 TANZANITE RING Tanzanite Ring T1.43ct D0.41ct 15.0g #14.5](http://koufuku.jp/cdn/shop/files/2000000133614_2.jpg?v=1778494149&width=480)
![[Used] PT900 RUBY RING Thailand Ruby Ring R1.01ct D0.58ct GIA Certificate 5.1g #11](http://koufuku.jp/cdn/shop/files/2000000133263_3.jpg?v=1778489509&width=480)
Sold Out
![[Used] K18YG EMERALD RING E1.25ct D0.55ct 19.8g #12](http://koufuku.jp/cdn/shop/files/2000000133430_2.jpg?v=1778492905&width=480)
KOUFUKU is an e-commerce site that offers a wide range of products, including jewelry, precious metals, designer bags, designer watches, designer apparel, and tableware. In addition to retail sales, we also provide purchase services.
![[Pre-owned] MITSUKOSHI K18YG Ruby & Diamond Ring R0.79ct D0.82ct 7.8g #12.5](http://koufuku.jp/cdn/shop/files/2000000145907_2.jpg?v=1788151913&width=480)
![[Used] PT900 NO HEAT SAPPHIRE RING Sri Lankan Unheated Sapphire Ring S5.40ct D1.19ct GIA Certificate 10.4g #11.5](http://koufuku.jp/cdn/shop/files/2000000133799_3.jpg?v=1777881348&width=480)