I've noticed a crack appearing vertically in the stone blocks external of my front window. It looks as if the window has been bonded to the stone wall at some time and probably with the window contracting and expanding slightly (pvc window)it has caused the corner of the stone to split all the way up.
Would I be able to bond the cracked piece of stone back onto the original stone? If so what could I use to bond it?
Photos at the link
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