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.
Diamond is an allotrope of carbon. It is the hardest known natural material and the third-hardest known material after aggregated diamond nanorods and ultrahard fullerite. Its hardness and high dispersion of light make it useful for industrial applications and jewelry.
Wood and bones are two good examples of natural composites. Hemicellulose and lignin act as the polymer matrix in wood, while the cellulose fibers act as the filler. Fiberglass is an excellent example of a man-made composite.