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![[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 R0.43ct R0.34ct D0.21ct 7g #12.5](http://koufuku.jp/cdn/shop/files/86019_01.jpg?v=1751706059&width=480)
![[Used] PT900 RUBY Ruby Ring R0.54ct D0.35ct Certificate included 4.9g #6.5](http://koufuku.jp/cdn/shop/files/2000000070537_3.jpg?v=1745909411&width=480)
![[Used] PT900 RUBY Ruby Ring R0.56ct D0.30ct 5.8g #8](http://koufuku.jp/cdn/shop/files/26640_01.jpg?v=1751706024&width=480)
![[Used] PT900 RUBY Ruby Ring, R1.03ct, D0.39ct, CGL Sorting, 5.4g, #12](http://koufuku.jp/cdn/shop/files/2000000126043_3.jpg?v=1765877429&width=480)
![[Used] PT900 RUBY Ruby Ring R1.05ct D0.45ct 6.8g #13 Made in Mozambique Comes with GIA Certificate of Origin](http://koufuku.jp/cdn/shop/files/2000000015392_3.jpg?v=1744859133&width=480)
![[Used] PT900 RUBY Ruby Ring R1.21ct D0.57ct 8g #14](http://koufuku.jp/cdn/shop/files/70513_01.jpg?v=1751706107&width=480)
![[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)
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![[Used] PT900 Ruby Unheated Ruby Ring R1.297ct D0.832ct R0.643ct GIA Certificate Included 10.9g](http://koufuku.jp/cdn/shop/files/2000000068664_3.jpg?v=1744950753&width=480)
![[Used] PT900 RUBY Ruby Ring, R0.45ct, D0.24ct, 5.8g, #7](http://koufuku.jp/cdn/shop/files/2000000017730_2.jpg?v=1759735437&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)
