collection: Ring
The highest quality diamonds and gemstones exude unparalleled beauty.Amazing-Koboring collection.
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Neon color 1.5ct natural from Brazil paraiba tourmaline Natural Diamond Pt900 Platinum Ring [GIAidentification report]
Regular price ¥1,480,000 JPYRegular priceunit price / aroundsale price ¥1,480,000 JPYsold out -
World's highest quality! Undamaged Colorless 1ct D IF EX Diamond Platinum Pt900 Ring April Birthstone [GIA grading report]
Regular price ¥1,480,000 JPYRegular priceunit price / aroundsale price ¥1,480,000 JPYsold out -
1.01ct Natural Diamond D IF EX Oval K18 YG Yellow Gold Ring [GIAgrading report]
Regular price ¥1,480,000 JPYRegular priceunit price / aroundsale price ¥1,480,000 JPYsold out -
A world-renowned ultra-rare gem! Almost 0.8ct natural auinite 0.73ct natural diamond PT950 platinum ring [CGLidentification report]
Regular price ¥1,480,000 JPYRegular priceunit price / aroundsale price ¥1,480,000 JPYsold out -
Made in Brazil, the color changes dramatically! 1.22ct Natural Alexandrite 0.98ct Natural Diamond Pt950 Platinum Ring Ring [GIAidentification report]
Regular price ¥1,480,000 JPYRegular priceunit price / aroundsale price ¥1,480,000 JPYsold out -
1.109ct Heart Cue D Color VVS-2 EX Natural Diamond K18 WG White Gold Ring April Birthstone 18K [CGLWith appraisal]
Regular price ¥1,450,000 JPYRegular priceunit price / aroundsale price ¥1,450,000 JPYsold out -

D IF EX 1ct Diamond Emerald Cut K18 WG White Gold Ring April Birthstone 18K [GIA grading report]
Regular price ¥1,398,000 JPYRegular priceunit price / aroundsale price ¥1,398,000 JPYsold out -
[GIAgrading report] Top quality 1ct D IF emerald cut natural diamond PT900 platinum ring April birthstone
Regular price ¥1,390,000 JPYRegular priceunit price / aroundsale price ¥1,390,000 JPYsold out -
2.277ct D SI2 GOOD Natural Diamond Pt900 Platinum 4 Claw Single Ring Ring April Birthstone [grading report]
Regular price ¥1,380,000 JPYRegular priceunit price / aroundsale price ¥1,380,000 JPYsold out -
Supreme brilliance! Super beautiful! 1.01ct D IF EX Natural Diamond Platinum Pt950 Ring [GIAgrading report] Oval cut
Regular price ¥1,380,000 JPYRegular priceunit price / aroundsale price ¥1,380,000 JPYsold out -
Made in Brazil, the color changes dramatically! 1.14ct Alexandrite Pt900 Platinum Ring June Birthstone [GIAidentification report]
Regular price ¥1,280,000 JPYRegular priceunit price / aroundsale price ¥1,280,000 JPYsold out -
Super rare! high quality! 0.7ct Natural Pink Diamond Natural Diamond Pink Diamond K18WG Ring Ring April Birthstone [CGLgrading report]
Regular price ¥1,280,000 JPYRegular priceunit price / aroundsale price ¥1,280,000 JPYsold out -
World rare gem! Neon Blue 0.6ct Natural Ouinite Natural Diamond PT900 Platinum Ring Ring [CGLidentification report]
Regular price ¥1,280,000 JPYRegular priceunit price / aroundsale price ¥1,280,000 JPY -
Large grains! 2ct natural diamond SI2 platinum Pt900 ring [CGLgrading reportWith]
Regular price ¥1,280,000 JPYRegular priceunit price / aroundsale price ¥1,280,000 JPYsold out -
Gorgeous! Super Large 17mm White Butterfly Pearl Natural Diamond Platinum Pt900 Pearl Ring Ring [identification report]
Regular price ¥1,250,000 JPYRegular priceunit price / aroundsale price ¥1,250,000 JPYsold out -
Ashoka Ashoka Cut 1.02ct Natural Diamond E SI2 Platinum Pt900 Ring [GIAgrading report]
Regular price ¥1,180,000 JPYRegular priceunit price / aroundsale price ¥1,180,000 JPYsold out











