Gems, Jewelry and Precious Metals
Showing 1386 products
![[Used] PT900 RUBY Ruby Ring R2.525ct D0.72ct #9 7.9g Comes with Central Gem Laboratory sorting](http://koufuku.jp/cdn/shop/files/2000000011943_3.jpg?v=1744858149&width=480)
![[Used] Pt900 Burmese unheated ruby ring R2.09ct D0.80ct GIA certificate of origin included, identification certificate 6.9g #12](http://koufuku.jp/cdn/shop/files/2000000022765_3.jpg?v=1744618053&width=480)
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![[Pre-owned] K18YG Green Tourmaline Ring GT1.464ct 5.2g #14 with Certificate of Authenticity](http://koufuku.jp/cdn/shop/files/2000000043449_3.jpg?v=1750926454&width=480)
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![[Used] KABANA K18YG Shell/Onyx Diamond Ring #12.5 8g](http://koufuku.jp/cdn/shop/files/2000000012100_2.jpg?v=1744548224&width=480)
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![[Used] PT900 EMERALD V-line ring E0.60ct D0.10ct 4.8g #13.5](http://koufuku.jp/cdn/shop/files/2000000064994_8.jpg?v=1743409607&width=480)
![[Used] PT900 Emerald Ring, E0.53ct, D0.68ct, 5.8g](http://koufuku.jp/cdn/shop/files/2000000021850_8.jpg?v=1752729165&width=480)
![[Used] PT900 JADEITE Jadeite Ring J4.49ct D1.75ct 11.0g #11](http://koufuku.jp/cdn/shop/files/2000000020518_8.jpg?v=1743409133&width=480)
![[Used] PT900 CATS EYE Cat's Eye Ring CE1.00ct D0.50ct 5.2g #11](http://koufuku.jp/cdn/shop/files/2000000019109_8.jpg?v=1743408980&width=480)
![[Used] PT900 CATS EYE Ring CE2.23ct D0.47ct 6.9g #20](http://koufuku.jp/cdn/shop/files/2000000018355_8.jpg?v=1743408775&width=480)
![[Used] PT900 CATS EYE Cat's Eye Ring CE1.41ct D0.12ct 5.6g #13](http://koufuku.jp/cdn/shop/files/2000000017679_2.jpg?v=1743408565&width=480)
![[Used] PT900 JADEITE Jadeite Ring J2.044ct D0.486ct 7.5g #16](http://koufuku.jp/cdn/shop/files/2000000016818_8.jpg?v=1748238748&width=480)
![[Used] PT900 jade ring J4.54ct D0.46ct 8.4g#12.5 Identification](http://koufuku.jp/cdn/shop/files/2000000014609_8.jpg?v=1743407785&width=480)
![[Used] PT900 JADEITE Jadeite Ring J1.79ct D0.53ct 5.6g #11](http://koufuku.jp/cdn/shop/files/2000000014456_8.jpg?v=1743407357&width=480)
![[Used] PT900 CATS EYE Cat's Eye Ring CE1.52ct D1.35ct 9.2g #8](http://koufuku.jp/cdn/shop/files/2000000013749_8.jpg?v=1743407206&width=480)
![[Used] PT900 CATS EYE Ring CE1.49ct D0.52ct 7.7g #11](http://koufuku.jp/cdn/shop/files/2000000012230_8.jpg?v=1743406180&width=480)
![[Used] PT900 EMERALD Emerald Ring E0.60ct D0.70ct 6.4g #15](http://koufuku.jp/cdn/shop/files/2000000009247_2.jpg?v=1747801134&width=480)
![[Used] PT900 EMERALD Ring E0.48ct D0.39ct 4.9g #12](http://koufuku.jp/cdn/shop/files/2000000007724_8.jpg?v=1752729165&width=480)
![[Used] PT900 SAPPHIRE Unheated Sapphire Ring S1.04ct D0.26ct 6g GIA Certificate of Origin](http://koufuku.jp/cdn/shop/files/2000000021751_3.jpg?v=1743403204&width=480)
![[Used] PT900 PINK TOURMALINE Pink tourmaline ring PT1.58ct D0.20ct 6.76g #12](http://koufuku.jp/cdn/shop/files/82431_01.jpg?v=1743142576&width=480)
![[Used] PT900 SAPPHIRE Ring S0.40ct D0.27ct #11](http://koufuku.jp/cdn/shop/files/21737_01.jpg?v=1743141710&width=480)
![[Used] Pt900 Ruby Ring D0.15ct R0.17ct 10.2g #10.5](http://koufuku.jp/cdn/shop/files/13473_01_4ee0628a-3bc2-41b9-a004-efce4cc98be0.jpg?v=1743141413&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] K18YG DIAMOND Diamond Ring D1.00 #11](http://koufuku.jp/cdn/shop/files/73590_01.jpg?v=1743400609&width=480)
![[Used] K18YG DIAMOND Diamond Ring 0.412ct D0.25ct #12](http://koufuku.jp/cdn/shop/files/70704_01.jpg?v=1743400497&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)
