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- ...
This heat and pressure were believed to have existed in molten rock far below the earthâs surface where volcanoes created these conditions. The one thing everyone agrees on, geologists and diamond users alike, is that diamonds are the hardest and one of the most valuable substances man has ever known. Not only are diamonds used in jewelry (about 20% of all the diamonds mined), but they are more widely used in industry, to cut very hard metal, as tips of drill bits in mining, for record player needles, and for transistors and other electronic equipment.