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Is this a raw blue sapphire?

Fair size and curious look on the surface, first thing you need to do is test the stone’s Specific Gravity, if it’s a Sapphire is should have an SG of 4.

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looks like river tumbled granite, not at all like sapphire

Ugh…I’m embarrassed. This photo is awful and doesn’t do the stone any justice.
I can definitely see how it looks like granite in this blurry picture. I tried to delete this post but I am not allowed. Please forgive me, and I will take better photos and provide more information, like the SG, “Dihusky” thank you for your suggeston. Take care and thank you both for responding.