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BLUE SAPPHIRE - ROSE CHANELS?

Mickey Bourbon

Rough_Rock
Joined
Apr 9, 2021
Messages
5
I recently purchased a large blue sapphire. Looking at the stone under a jewelers loupe I noticed some silk but also a very thin dark lattice of very dark blue even perhaps black. It is almost unperceptible. What could this lattice represent, these are very thin lines crossing each other at an angle
 
Yes but they are dark
 
They have the shape of those in the picture but are dark like these
 
Boehmite needles in untreated blue sapphire 5.32 ct


Boehmite needles in untreated blue sapphire 5.32 ct
 
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