Showing 1790 products
![[Pre-owned] PT900 Sapphire Ring, S4.132ct, D0.15ct, with NGL Appraisal, 7.8g, Size 11](http://koufuku.jp/cdn/shop/files/2000000095561_3.jpg?v=1765877448&width=480)
![[Pre-owned] PT900 Sapphire Ring, S4.19ct D1.00ct, with CGL Sorting, 15.5g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000012049_3.jpg?v=1768808641&width=480)
![[Pre-owned] PT900 Sri Lankan Sapphire Ring S10.07ct D3.26ct with GRS Royal Blue Certificate, 21.5g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000011981_3.jpg?v=1763176025&width=480)
![[Pre-owned] PT900 Madagascar Unheated Sapphire Ring 0.97ct GRS 7.6g](http://koufuku.jp/cdn/shop/files/2000000018508_3.jpg?v=1759990497&width=480)
![[Pre-owned] PT900 Unheated Sapphire Ring, S1.712ct D1.39ct, with GRJ appraisal report, 18.5g, size 13.5](http://koufuku.jp/cdn/shop/files/2000000018515_3.jpg?v=1765159207&width=480)
![[Pre-owned] PT900 Unheated Sapphire Ring S2.823ct D0.33ct With Sorting 7.1g #16](http://koufuku.jp/cdn/shop/files/2000000024349_3.jpg?v=1765877332&width=480)
![[Pre-owned] PT900 Unheated Sapphire Ring S4.18ct D0.60ct with Sorting, 6.2g, Size 13](http://koufuku.jp/cdn/shop/files/2000000019468_3.jpg?v=1763175991&width=480)
![[Pre-owned] PT900 Unheated Sapphire Ring S6.896ct D0.21ct, CGL Identification Report, 7.3g, Size 11](http://koufuku.jp/cdn/shop/files/2000000068367_3.jpg?v=1752392530&width=480)
![[Pre-owned] PT900 South Sea Pearl Ring 10.8mm D0.18ct 6.9g #13](http://koufuku.jp/cdn/shop/files/2000000010106_2.jpg?v=1765877457&width=480)
![[Pre-owned] PT900 SOUTH SEA PEARL RING 11.5mm D0.11ct 9.0g](http://koufuku.jp/cdn/shop/files/2000000146058_2.jpg?v=1789096660&width=480)
![[Pre-owned] PT900 South Sea Pearl Ring, White South Sea Pearl 11.8mm, Diamond 0.26ct, 13.7g, Size 14](http://koufuku.jp/cdn/shop/files/2000000133126_2.jpg?v=1771313065&width=480)
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![[Pre-owned] PT900 South Sea White Pearl Ring 14.5mm, D0.12ct, 17.5g, Size 11, CGL Sorting Included](http://koufuku.jp/cdn/shop/files/2000000015767_3.jpg?v=1746182933&width=480)
![[Pre-owned] PT900 SPINEL RING SP2.204ct D0.31ct with CGL Sorting, 6.1g, Size 12](http://koufuku.jp/cdn/shop/files/2000000125701_3.jpg?v=1785997079&width=480)
![[Pre-owned] PT900 SPINEL Red Spinel Ring, RS2.75ct, D0.63ct, with CGL (Central Gem Laboratory) Appraisal, 7.7g, Size 12](http://koufuku.jp/cdn/shop/files/2000000069876_3.jpg?v=1746249870&width=480)
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![[Pre-owned] PT900 SPINEL Ring S4.46ct D0.31ct 8.9g #17.5](http://koufuku.jp/cdn/shop/files/2000000016474_2.jpg?v=1766801414&width=480)
![[Pre-owned] PT900 Kunzite Ring 4.36ct D0.51ct 11.7g #14](http://koufuku.jp/cdn/shop/files/2000000106137_2.jpg?v=1766219023&width=480)
![[Used] PT900 STAR RUBY RING Star Ruby Ring SR1.24ct D0.49ct 5.1g #8](http://koufuku.jp/cdn/shop/files/2000000075433_3.jpg?v=1751698229&width=480)
![[Used] PT900 STAR RUBY RING Star Ruby Ring SR1.38ct D0.30ct D0.57ct 16.2g #13](http://koufuku.jp/cdn/shop/files/2000000021621_2.jpg?v=1778489988&width=480)
![[Pre-owned] PT900 Star Ruby Ring SR3.57ct D1.40ct 8.8g #11.5](http://koufuku.jp/cdn/shop/files/2000000070353_2.jpg?v=1752392450&width=480)
![[Pre-owned] PT900 STAR SAPPHIRE RING SS1.11ct D1.02ct 8.5g #11.5](http://koufuku.jp/cdn/shop/files/2000000007755_2.jpg?v=1768444693&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] PT900 STAR SAPPHIRE RING SS1.81ct D1.21ct with CGL Sorting, 11.5g, Size 14.5](http://koufuku.jp/cdn/shop/files/2000000033501_3.jpg?v=1765161777&width=480)
![[Pre-owned] PT900 STAR SAPPHIRE RING Star Sapphire 10.145ct Diamond 3.84ct 24.1g #12](http://koufuku.jp/cdn/shop/files/2000000098821_2.jpg?v=1768808719&width=480)
![[Pre-owned] PT900 STAR SAPPHIRE RING SS38.18ct D0.18ct with GRJ Sorting, 15.5g, Size 12.5](http://koufuku.jp/cdn/shop/files/2000000000688_3.jpg?v=1768444693&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)