Gems, Jewelry, and Precious Metals
Showing 1929 products
![[Pre-owned] K18YG Black Opal Ring, 4.0g, Size 13.5](http://koufuku.jp/cdn/shop/files/DSC_2032.jpg?v=1775189269&width=480)
![[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] K18WG Ruby Ring, Mozambique Unheated Ruby Ring R3.09ct D1.88ct, GRS Certified, 8.7g, Size 13.5](http://koufuku.jp/cdn/shop/files/2000000041438_4.jpg?v=1765161777&width=480)
![[Pre-owned] K18WG Black Opal Ring BO0.78ct D0.53ct 4.1g #13.5](http://koufuku.jp/cdn/shop/files/2000000071572_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18YG Tourmaline Bead Necklace 29.3g](http://koufuku.jp/cdn/shop/files/2000000040905_2.jpg?v=1765161777&width=480)
![[Pre-owned] La NOUVELLE VAGUE K18WG/Enamel DIAMOND Ring 16.2g #13.5 ONE PRICE](http://koufuku.jp/cdn/shop/files/DSC_2020.jpg?v=1775189013&width=480)
La NOUVELLE BAGUE
[Pre-owned] La NOUVELLE VAGUE K18WG/Enamel DIAMOND Ring 16.2g #13.5 ONE PRICE
$3,664.00
![[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 Burmese No-Heat Ruby Ring R2.04ct D3.52ct with GRS "Pigeon Blood" Certificate, 11.3g, Size 11](http://koufuku.jp/cdn/shop/files/2000000045436_3.jpg?v=1765161777&width=480)
![[Pre-owned] PT850/PT900 Aquamarine Pendant Necklace, AQ2.13ct, D0.94ct, 34.8g](http://koufuku.jp/cdn/shop/files/DSC_6554.jpg?v=1771668126&width=480)
![[Pre-owned] K18/K18WG Diamond Pendant Necklace D0.10ct 6.2g](http://koufuku.jp/cdn/shop/files/2000000009476_2.jpg?v=1765161778&width=480)
![[Pre-owned] SONORE PT900 Watermelon Tourmaline Ring, Tourmaline 51.7ct, Diamond 0.05ct, 21.2g, Size 14](http://koufuku.jp/cdn/shop/files/2000000006253_2.jpg?v=1765161777&width=480)
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![[Pre-owned] K18YG Mabe Pearl Pendant Necklace 13.0mm-14.0mm D0.02ct 9.2g](http://koufuku.jp/cdn/shop/files/2000000112916_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18WG South Sea Pearl Pendant Necklace P15.4mm D0.32ct 8.6g](http://koufuku.jp/cdn/shop/files/2000000015842_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18YG Ruby Ring R1.44ct D0.35ct with Appraisal Certificate, 8.4g, Size 11](http://koufuku.jp/cdn/shop/files/2000000110585_3.jpg?v=1765161777&width=480)
![[Pre-owned] K18YG Coral Bead Necklace 4.5mm - 7.5mm D0.12ct 23.3g](http://koufuku.jp/cdn/shop/files/2000000097879_2.jpg?v=1765161777&width=480)
![[Pre-owned] PT850/PT900 DIAMOND Necklace, Diamond Pendant Necklace, 2.02ct, F Color, SI2 Clarity, Good Cut, CGL Sorting, 5.0g](http://koufuku.jp/cdn/shop/files/2000000115849_3.jpg?v=1765161777&width=480)
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![[Pre-owned] PT900/PT850 Diamond Pendant Necklace 0.429ct D0.41ct 4.3g](http://koufuku.jp/cdn/shop/files/2000000021973_2.jpg?v=1765161777&width=480)
![[Pre-owned] PT950 RUBY RING Mozambique Ruby Ring R3.064ct D1.60ct with GIA Report 6.4g #12](http://koufuku.jp/cdn/shop/files/2000000018911_3.jpg?v=1765161777&width=480)
![[Pre-owned] PT850/PT900 AQUAMARINE Pendant Necklace AQ55.91ct D0.96ct 21.5g](http://koufuku.jp/cdn/shop/files/2000000097985_2.jpg?v=1765161777&width=480)
![[Pre-owned] K18WG Colored Stone Necklace 13.647ct D1.08ct 60.6g](http://koufuku.jp/cdn/shop/files/2000000049076_2.jpg?v=1765161777&width=480)
![[Pre-owned] TASAKI Akoya Pearl & Crystal Necklace 7.0-7.5mm 82.2g 116cm ONE PRICE N](http://koufuku.jp/cdn/shop/files/2000000043319_2.jpg?v=1765161777&width=480)
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![[Pre-owned] PT900 Black Opal Ring, BO1.06ct, D0.61ct, with GRJ Grading Report, 6.2g, Size 13](http://koufuku.jp/cdn/shop/files/2000000012704_3.jpg?v=1765161777&width=480)
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![[Pre-owned] K18YG EMERALD Necklace with sorting, 8.5g](http://koufuku.jp/cdn/shop/files/2000000115313_3.jpg?v=1765161777&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)
