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- ...
Enamel defects. The surface layer of the teethâknown as the enamelâis considered the hardest mineral substance in the bodyâeven stronger than bone. Think of tooth enamel as the shield against tooth decay. But, when genetic defects occur, this protection can be hindered.