PearlLVR,
Only in the last few years are we seeing some natural color blue/silver akoya. They are offered in a range of quality, as you might expect, perhaps not qualifying as rare, but not common either. I agree, the shades are just beautiful; yours look so dark! As far as Beader's Secret thread, the SKY color was chosen specifically to compliment blue akoyas, kyanite, and other soft blue shades.
Sorry about the nasty knot, ugh. I was just noticing as BAS mentioned, looks like a double strand at least~yes, please tell us more!