Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] K18YG SAPPHIRE RING, Sapphire 3.13ct, Diamond 0.95ct, with CGL Sorting, 10.4g, Size #19](http://koufuku.jp/cdn/shop/files/2000000028590_3.jpg?v=1771665161&width=480)
![[Pre-owned] K18WG EMERALD RING E1.25ct D0.47ct 3.9g #14](http://koufuku.jp/cdn/shop/files/2000000093352_2.jpg?v=1771665161&width=480)
![[Pre-owned] K18WG Mozambique Unheated Ruby Earrings, R6.73ct, D3.46ct, with AIGS Appraisal, 11.5g](http://koufuku.jp/cdn/shop/files/2000000042947_4.jpg?v=1771665161&width=480)
![[Pre-owned] K18YG DIAMOND RING 0.52ct 7.6g #11](http://koufuku.jp/cdn/shop/files/2000000046990_2.jpg?v=1771665162&width=480)
![[Pre-owned] K18WG Ruby Earrings, Mozambique Unheated Ruby Earrings R2.14ct / R2.03ct D4.03ct 9.4g Pigeon Blood, GRS Certified](http://koufuku.jp/cdn/shop/files/2000000074818_7.jpg?v=1771665162&width=480)
![[Pre-owned] K18YG SAPPHIRE RING S1.27ct D1.95ct 11.1g #12](http://koufuku.jp/cdn/shop/files/2000000121703_2.jpg?v=1771665162&width=480)
![[Pre-owned] PT900 EMERALD RING E1.48ct D0.47ct 7.4g #12](http://koufuku.jp/cdn/shop/files/2000000092775_2.jpg?v=1771665162&width=480)
![[Pre-owned] K18WG DIAMOND RING D0.96ct 5.8g #12](http://koufuku.jp/cdn/shop/files/2000000007205_2.jpg?v=1771665162&width=480)
![[Pre-owned] K18YG SAPPHIRE RING S2.11ct D0.35ct 15.6g #15](http://koufuku.jp/cdn/shop/files/2000000092621_2.jpg?v=1771665487&width=480)
![[Pre-owned] K18/PT900 SAPPHIRE RING S1.80ct D0.16ct 13.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000108568_2.jpg?v=1771665487&width=480)
![[Pre-owned] PT900 DIAMOND NECKLACE Diamond Heart Motif Full Eternity Necklace D22.29ct 58.9g](http://koufuku.jp/cdn/shop/files/2000000019017_4.jpg?v=1774852517&width=480)
![[Pre-owned] K18YG DIAMOND NECKLACE Diamond Eternity Necklace D3.03ct 29.5g](http://koufuku.jp/cdn/shop/files/2000000074511_2.jpg?v=1771665488&width=480)
![[Pre-owned] K18YG/Pt900 DIAMOND RING D0.42ct 16.7g #15](http://koufuku.jp/cdn/shop/files/2000000007045_2.jpg?v=1771665488&width=480)
![[Pre-owned] K18YG GOLDEN PEARL RING South Sea Golden Pearl Ring P11.7mm D0.12ct 18.3g #19.5](http://koufuku.jp/cdn/shop/files/2000000026459_2.jpg?v=1771665668&width=480)
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![[Pre-owned] K18YG GOLDEN PEARL RING South Sea Golden Pearl Ring P13.5mm D0.11ct 17.8g #11](http://koufuku.jp/cdn/shop/files/2000000077383_2.jpg?v=1771665668&width=480)
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![[Pre-owned] K18YG Ruby Ring R1.15ct D0.60ct 11.2g #12](http://koufuku.jp/cdn/shop/files/2000000039718_2.jpg?v=1771665668&width=480)
![[Pre-owned] K18WG BLACK & COLORLESS DIAMOND RING D1.05ct 8.4g #16.5](http://koufuku.jp/cdn/shop/files/2000000040042_2.jpg?v=1771665668&width=480)
![[Used] CARTIER K18YG Panther Pendant Necklace 10.8g ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000041629_2.jpg?v=1771665668&width=480)
![[Pre-owned] 18K Yellow Gold Jadeite Ring, Jade 2.96ct, Diamond 1.14ct, 4.7g, Size 11](http://koufuku.jp/cdn/shop/files/2000000038193_2.jpg?v=1771665668&width=480)
![[Pre-owned] PT900 JADEITE RING J1.292ct D0.33ct CGL Sorting 4.5g #12](http://koufuku.jp/cdn/shop/files/2000000006567_3.jpg?v=1771665668&width=480)
![[Pre-owned] K18YG DIAMOND RING 1.18ct 12.3g #15.5](http://koufuku.jp/cdn/shop/files/2000000072883_2.jpg?v=1771665669&width=480)
![[Pre-owned] K18YG DIAMOND RING D1.20ct 10.9g #12.5](http://koufuku.jp/cdn/shop/files/2000000033624_2.jpg?v=1771665669&width=480)
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![[Pre-owned] K18YG EMERALD RING E0.38ct D1.41ct 5.8g #14](http://koufuku.jp/cdn/shop/files/2000000025582_2.jpg?v=1771665669&width=480)
![[Pre-owned] K18YG DIAMOND RING D1.20ct 6.0g #11.5](http://koufuku.jp/cdn/shop/files/2000000021324_2.jpg?v=1771665669&width=480)
![[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)
![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)