Showing 1288 products
![[Pre-owned] K18WG RUBY Unheated Ruby Ring, R1.08ct, D0.89ct, AIGS Pigeon Blood, 4.1g, #12.5](http://koufuku.jp/cdn/shop/files/2000000034508_3.jpg?v=1759735437&width=480)
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![[Pre-owned] K18WG SAPPHIRE DIAMOND RING Sapphire/Diamond Ring S3.90ct D0.80ct 13.2g #17.5](http://koufuku.jp/cdn/shop/files/2000000116532_2.jpg?v=1771313065&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire ring S1.55ct D0.28ct 3.31g #13](http://koufuku.jp/cdn/shop/files/2000000040691_2.jpg?v=1768808719&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire Ring S2.05ct D1.00ct 6.4g #12.5](http://koufuku.jp/cdn/shop/files/2000000040615_2.jpg?v=1768806609&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire ring S2.295ct D0.30ct 3.9g #12.5](http://koufuku.jp/cdn/shop/files/2000000093598_2.jpg?v=1768882395&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire ring S5.74ct D1.70ct 7.4g #13.5](http://koufuku.jp/cdn/shop/files/2000000050386_2.jpg?v=1768444671&width=480)
![[Pre-owned] K18WG SAPPHIRE RING Sapphire ring S6.22ct D1.68ct 9.5g #12.5](http://koufuku.jp/cdn/shop/files/2000000071039_2.jpg?v=1765161863&width=480)
![[Pre-owned] 18K White Gold SAPPHIRE Color Sapphire Pendant Necklace, S10.80ct, D0.12ct, Sorting, 11.0g](http://koufuku.jp/cdn/shop/files/2000000106946_2.jpg?v=1766801414&width=480)
![[Used] K18WG SAPPHIRE Ring S0.27ct D0.28ct 5.2g #14](http://koufuku.jp/cdn/shop/files/81045_01.jpg?v=1743141936&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.
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring 2.24ct D0.82ct 4.7g #14](http://koufuku.jp/cdn/shop/files/2000000030104_2.jpg?v=1752392450&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, CGL Sorting, 3.6g, #12.5](http://koufuku.jp/cdn/shop/files/2000000090146_3.jpg?v=1760678193&width=480)
![[Pre-owned] K18WG SAPPHIRE Sapphire Ring, S0.82ct, D0.24ct, 3.3g, #13](http://koufuku.jp/cdn/shop/files/2000000036304_2.jpg?v=1752392598&width=480)
![[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)
