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Summary of each stone can be seen here: https://buygemstone.info/2019/02/14/h...

In this video, I tried to discuss the thought process in determining the value for a blue sapphire based on 6 criteria's which I call 4Cs + OT. The criteria are Carat Weight, Color, Clarity, Cut, Origin and Treatments.

For additional pictures and explanation regarding blue sapphire treatments I would recommend to check our very popular blog post: https://buygemstone.info/2013/11/07/b...

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