Showing 1787 products
![[Used] K18PG DIAMOND RING Diamond Ring D2.00ct 5.4g #15](http://koufuku.jp/cdn/shop/files/2000000134284_3.jpg?v=1779355867&width=480)
![[Pre-owned] K18PG DIAMOND RING D0.05ct 6.4g #16.5](http://koufuku.jp/cdn/shop/files/2000000112466_2.jpg?v=1766221259&width=480)
![[Pre-owned] K18PG Diamond Ring D1.60ct 5.9g #12](http://koufuku.jp/cdn/shop/files/DSC_3934.jpg?v=1769670729&width=480)
![[Pre-owned] K18PG DIAMOND Ring D2.83ct 3.9g](http://koufuku.jp/cdn/shop/files/2000000039886_2.jpg?v=1765012878&width=480)
![[Pre-owned] K18PG Pink Sapphire Ring, Invisible Setting, Pink Sapphire PS0.95ct, Diamond D0.28ct, 4.2g, Size #12.5](http://koufuku.jp/cdn/shop/files/2000000147420_2.jpg?v=1788155286&width=480)
![[Pre-owned] K18PG Rose Quartz Pendant Necklace RQ12.33ct D0.56ct 10.7g](http://koufuku.jp/cdn/shop/files/2000000076652_2.jpg?v=1764830345&width=480)
![[Pre-owned] 18K Rose Gold Unheated Ruby Pendant Necklace R3.27ct D2.60ct with AIGS Pigeon Blood Certificate, 10.5g](http://koufuku.jp/cdn/shop/files/2000000050829_5.jpg?v=1765161776&width=480)
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![[Pre-owned] K18WG Myanmar Ruby Ring, R2.53ct D1.73ct, with GRS Certificate, 7.0g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069906_3.jpg?v=1768808719&width=480)
![[Pre-owned] K18WG ALEXANDRITE RING Alexandrite Diamond Ring A1.00ct D0.80ct 5.6g #15](http://koufuku.jp/cdn/shop/files/2000000008844_2.jpg?v=1768808620&width=480)
![[Pre-owned] K18WG ALEXANDRITE RING A2.67ct D1.94ct GRS Certified, 18.0g, Size 11](http://koufuku.jp/cdn/shop/files/2000000078502_3.jpg?v=1768806609&width=480)
![[Pre-owned] K18WG Indian Alexandrite Ring, A1.06ct D0.76ct, with GIA Report, 4.7g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000113135_3.jpg?v=1762397785&width=480)
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![[Used] K18WG AQUAMARINE RING Aquamarine Ring AQ0.92ct D0.60ct/0.51ct 6.1g #13](http://koufuku.jp/cdn/shop/files/2000000087948_2.jpg?v=1779354385&width=480)
![[Used] K18WG AQUAMARINE RING AQ11.21ct D1.64ct 9.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000045115_2.jpg?v=1771814675&width=480)
![[Pre-owned] K18WG Aquamarine Pendant Necklace A0.54ct D0.37ct 5.5g](http://koufuku.jp/cdn/shop/files/2000000058474_2.jpg?v=1764830303&width=480)
![[Pre-owned] K18WG Aquamarine Ring AQ2.31ct D0.47ct 4.6g #14](http://koufuku.jp/cdn/shop/files/2000000045337_2.jpg?v=1760667250&width=480)
![[Pre-owned] K18WG Aquamarine Ring AQ3.82ct S1.35ct D0.22ct 8.7g #14](http://koufuku.jp/cdn/shop/files/2000000042756_2.jpg?v=1765175629&width=480)
![[Used] K18WG BLACK / COLORLESS DIAMOND RING Black/Colorless Diamond Ring BD0.19ct D0.21ct 13.2g #13.5](http://koufuku.jp/cdn/shop/files/2000000133638_2.jpg?v=1778732513&width=480)
![[Pre-owned] K18WG BLACK OPAL RING BO1.5ct D0.49ct 5.3g](http://koufuku.jp/cdn/shop/files/2000000042114_2.jpg?v=1768806608&width=480)
![[Pre-owned] K18WG BLACK OPAL RING BO1.40ct D0.63ct 3.2g #12.5](http://koufuku.jp/cdn/shop/files/2000000042121_2.jpg?v=1768800610&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)
![Used] K18YG ENAMEL PENDANT NECKLACE 13.4g](http://koufuku.jp/cdn/shop/files/2000000134116_2.jpg?v=1778489330&width=480)