Showing 1787 products
![[Pre-owned] K18WG STAR SAPPHIRE EARRINGS Star Sapphire SS10.30ct x 2, Diamond D0.90ct, 9.1g](http://koufuku.jp/cdn/shop/files/2000000129419_3.jpg?v=1773565639&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE RING Star Sapphire Ring SS2.58ct D0.49ct 5.0g #13.5](http://koufuku.jp/cdn/shop/files/2000000045597_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS3.96ct D0.09ct 3.6g #12.5](http://koufuku.jp/cdn/shop/files/2000000050539_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG STAR SAPPHIRE RING Star Sapphire 4.90ct Diamond 0.55ct 5.8g #14](http://koufuku.jp/cdn/shop/files/2000000039565_2.jpg?v=1768800609&width=480)
![[Used] K18WG STAR SAPPHIRE RING Star Sapphire Ring SS5.86ct D0.17ct 3.7g #13.5](http://koufuku.jp/cdn/shop/files/2000000050461_2.jpg?v=1760678192&width=480)
![[Used] K18WG STAR SAPPHIRE RING SS14.43ct D0.32ct 8.5g #13.5](http://koufuku.jp/cdn/shop/files/2000000042381_2.jpg?v=1782449716&width=480)
![[Pre-owned] K18WG Star Sapphire Ring, SS2.067ct D0.16ct, 2.2g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000045825_2.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG Star Sapphire Pendant Necklace SS22.00ct 0.16ct 16.2g](http://koufuku.jp/cdn/shop/files/2000000043630_2.jpg?v=1765175628&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS14.00ct D0.89ct 8.9g #13.5](http://koufuku.jp/cdn/shop/files/2000000050355_2.jpg?v=1768808620&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS7.71ct D0.36ct 6.2g #12.5](http://koufuku.jp/cdn/shop/files/2000000050348_2.jpg?v=1766801414&width=480)
![[Pre-owned] K18WG Star Sapphire Ring SS8.26ct D0.50ct 6.6g #14](http://koufuku.jp/cdn/shop/files/2000000082981_2.jpg?v=1767585988&width=480)
![[Pre-owned] K18WG TAHITIAN PEARL RING Black Pearl Ring P15.0mm D0.88ct 18.9g #12.5](http://koufuku.jp/cdn/shop/files/2000000056630_2.jpg?v=1771658187&width=480)
![[Pre-owned] K18WG Tanzanite Ring T2.52ct D0.63ct 3.6g #13](http://koufuku.jp/cdn/shop/files/2000000027340_2.jpg?v=1762391163&width=480)
![[Pre-owned] K18WG Tanzanite Ring T2.89ct D0.44ct 3.8g #13](http://koufuku.jp/cdn/shop/files/2000000045375_3.jpg?v=1760667249&width=480)
![[Pre-owned] K18WG Tanzanite Ring T1.28ct D0.33ct 5.8g #9.5](http://koufuku.jp/cdn/shop/files/2000000037738_3.jpg?v=1765175629&width=480)
![[Pre-owned] K18WG Tanzanite Ring, Appraisal Report included, 10.2g, Size #11.5](http://koufuku.jp/cdn/shop/files/2000000039763_3.jpg?v=1766824686&width=480)
![[Pre-owned] K18WG Blue Topaz Ring, D0.690ct, D1.00ct, 16.1g, Size 13](http://koufuku.jp/cdn/shop/files/2000000069661_2.jpg?v=1746161371&width=480)
![[Pre-owned] K18WG Green Tourmaline Pendant Necklace T4.27ct D0.27ct 11.7g](http://koufuku.jp/cdn/shop/files/2000000106090_2.jpg?v=1765175629&width=480)
![[Pre-owned] K18WG Green Tourmaline Ring, T13.679ct, D1.30ct, 9.5g, Size #14](http://koufuku.jp/cdn/shop/files/2000000092706_2.jpg?v=1762397786&width=480)
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![[Pre-owned] K18WG White Opal Ring OP2.44ct D0.20ct 3.0g #13](http://koufuku.jp/cdn/shop/files/2000000036854_2.jpg?v=1760667249&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] K18WG Akoya Pearl Emerald/Sapphire/Ruby/Diamond Earrings P6.8mm D1.03ct+D1.03ct 12.6g](http://koufuku.jp/cdn/shop/files/2000000039459_2.jpg?v=1792047691&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)