Showing 1787 products
![[Pre-owned] PT900 RUBY Unheated Ruby Ring R1.077ct D0.72ct 5.8g #12 with Appraisal Report](http://koufuku.jp/cdn/shop/files/2000000011783_3.jpg?v=1750401687&width=480)
![[Pre-owned] PT900 Sri Lankan Unheated Ruby Ring R2.00ct D0.95ct GIA Certified 6.2g #12](http://koufuku.jp/cdn/shop/files/2000000121772_3.jpg?v=1767586070&width=480)
![[Pre-owned] PT900 Burmese Ruby Ring R1.20ct D1.24ct with GIA Report, 12.8g, Size 15](http://koufuku.jp/cdn/shop/files/2000000000404_3.jpg?v=1759988718&width=480)
![[Pre-owned] PT900 Burmese Ruby Ring, R1.31ct, D1.463ct, with GIA Report, 9.2g, Size 10.5](http://koufuku.jp/cdn/shop/files/2000000015460_4.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 Burmese Ruby Ring, R1.505ct D1.02ct, GIA Report, 8.2g, Size #12](http://koufuku.jp/cdn/shop/files/2000000006680_3.jpg?v=1760667249&width=480)
![[Pre-owned] PT900 Madagascar Unheated Ruby Ring, R2.04ct D0.85ct, with GRS Certificate, 7.3g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000021652_3.jpg?v=1760678193&width=480)
![[Pre-owned] PT900 Madagascar Unheated Ruby Ring R2.12ct D1.10ct with GRS Certificate, 7.9g, Size 13](http://koufuku.jp/cdn/shop/files/2000000035161_3.jpg?v=1759738422&width=480)
![[Pre-owned] PT900 Mozambique Unheated Ruby Ring R1.02ct D0.66ct GRS Pigeon Blood, with certificate, 7.4g, size 16](http://koufuku.jp/cdn/shop/files/2000000070766_3.jpg?v=1760667249&width=480)
![[Pre-owned] PT900 Mozambique Unheated Heart-Shaped Ruby Ring R1.02ct D0.32ct with GIA Report, 4.8g, Size 12](http://koufuku.jp/cdn/shop/files/2000000121642_3.jpg?v=1768444840&width=480)
![[Pre-owned] PT900 Mozambican Unheated Ruby Ring 2.00ct, with GRS Certificate, 4.9g, Size 11.5](http://koufuku.jp/cdn/shop/files/2000000115788_3.jpg?v=1762397786&width=480)
![[Pre-owned] PT900 Ruby Ring R0.50ct D0.50ct 4.8g #9 GGS Sorting](http://koufuku.jp/cdn/shop/files/2000000022048_3.jpg?v=1750401687&width=480)
![[Pre-owned] PT900 Ruby Ring R0.53ct D0.07ct 6.9g #16](http://koufuku.jp/cdn/shop/files/2000000124735_2.jpg?v=1766219022&width=480)
![[Pre-owned] PT900 RUBY Ring R0.600ct D0.46ct 11.9g #11](http://koufuku.jp/cdn/shop/files/2000000115283_2.jpg?v=1762391102&width=480)
![[Pre-owned] PT900 RUBY Ring R0.732ct D0.56ct 8.0g #15](http://koufuku.jp/cdn/shop/files/2000000013091_2.jpg?v=1750401687&width=480)
![[Pre-owned] PT900 Ruby Ring R0.756ct D0.53ct, includes NGL sorting, 9.0g, size 12.5](http://koufuku.jp/cdn/shop/files/2000000018089_2.jpg?v=1759738422&width=480)
![[Pre-owned] PT900 RUBY Ring R1.17ct D0.67ct 10.4g #14](http://koufuku.jp/cdn/shop/files/2000000026015_2.jpg?v=1765159208&width=480)
![[Pre-owned] PT900 Ruby Ring R1.18ct D0.41ct 7.2g #12](http://koufuku.jp/cdn/shop/files/2000000011608_2.jpg?v=1759735437&width=480)
![[Pre-owned] PT900 Ruby Ring, R1.22ct D0.25ct, CGL Sorting, 9.1g, #15](http://koufuku.jp/cdn/shop/files/2000000013268_3.jpg?v=1759735437&width=480)
![[Pre-owned] PT900 RUBY Ring R1.56ct D1.01ct 8.3g #13](http://koufuku.jp/cdn/shop/files/2000000017211_2.jpg?v=1759735437&width=480)
![[Pre-owned] PT900 RUBY Ring, R2.32ct D0.70ct, with CGL Sorting, 6.2g, Size 11](http://koufuku.jp/cdn/shop/files/2000000102146_3.jpg?v=1766801414&width=480)
![[Pre-owned] PT900 RUBY Ring R1.52ct D0.44ct 9.9g #11](http://koufuku.jp/cdn/shop/files/2000000127149_2.jpg?v=1767585985&width=480)
![[Pre-owned] PT900 Burmese Ruby Ring, R1.32ct D1.61ct, with GIA Report, 6.9g, Size #13](http://koufuku.jp/cdn/shop/files/2000000075563_3.jpg?v=1749178071&width=480)
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![[Pre-owned] PT900 SAPPHIRE RING S1.84ct D0.53ct 8.3g #14](http://koufuku.jp/cdn/shop/files/DSC_1981.jpg?v=1775179919&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)