What Is Holy Basil? Holy basil, sometimes called Thai basil tulsi, is an herb from the same family as the basil often used in cooking. Although it's used in Ayurvedic medicine, clinical studies backing up any of the traditional uses for this herb are limited.
Pure diamond is the hardest known natural mineral substance and will scratch any other natural material. Diamond is therefore used to cut other diamonds; in particular, higher-grade diamonds are used to cut lower-grade diamonds. But after billions of bucks in research, times have moved on.
The hardest commercially available hardwood is hickory, and it is five times harder than aspen, one of the âsoftâ hardwoods. And while this example lists just some of the most popular hardwood species, there are hundreds of varieties, representing the North American hardwood population. While some tropical hardwoods can be used for interior applications, including flooring, the color, grain pattern, hardness and luster of many imported woods differ from those of American hardwoods. 2  For more information on non-native species, refer to the â Donât be fooled â article.