In the Hindu religious tradition, the tulsi, or holy basil, plant serves both as an important symbol and also as a popular medicinal remedy.
Diamond use to be the hardest known natural substance now it is the mineral lonsdaleite at 58% stronger then diamond is the first the second hardest is wurtzite boron nitridâ¦e at 18% stronger then diamonds they are both extreamly rare natural minerals sources http://www.newscientist.com/article/dn16610-diamond-no-longer-natures- ...
Thanks knobley. You saved my from being the guy who says, You know, those aren't actually elements.... ... although I'm still gonna be a dick and say since diamond is the hardest mineral, and it's an allotrope of carbon, carbon's the strongest element.