not sure about this. The Ruby of Life is described as giving Sargon the ability to control anything he touches. IMO, it seems more of a limitation of power when compared to the likes of Dr. Strange, Dr. Fate and Adam Warlock. I'm not a Sargon expert, but I have only seen him use earth, wind, fire or water as offensive/defensive weapons.
That being said, I have to give it to Warlock.