Sagittarius tattoo meaning: an arrow can only be shot forward by being pulled back. So when life is dragging you back with difficulties, it means that it's going to launch you into something great. So just focus, and keep aiming.
A diamond is the strongest and most pure form a carbon. The word diamond comes from the ancient Greek αδάμας – adámas ("unbreakable"). The arrow will represent breaking through the toughest of situations, when you most want to give up.