Interesting - the title of the item says "created" but the stone description is "natural."  The vast majority of aquamarines are heat treated to remove greenish or yellowish tints, and by GIA practice this must be disclosed to a buyer.  In any case, this particular stone is a beautiful, uniform pale blue, set correctly, and strung on a box chain of appropriate length and diameter.  It's full of sparkle, and very lovely.  I'm very happy with my purchase!