Allotropes of carbon dispersion of light of diamond make it useful for both industrial applications and jewelry. Diamond is the hardest known natural mineral. This makes it an excellent abrasive and makes it hold polish and luster extremely well. No known naturally occurring substance can cut (or even scratch) a diamond, except another diamond. The market for industrial-grade diamonds operates much differently from its gem-grade counterpart. Industrial diamonds are valued mostly for their hardness and heat conductivity, making many of the gemological characteristics of diamond, including clarity and color, mostly irrelevant. This helps explain why 80% of mined diamonds (equal to about 100
The Hardest Part (Coldplay song) The Hardest Part (Coldplay song) "The Hardest Part" is a song by British rock band Coldplay. It was written by all four members of the band for their third album, "X&Y". A piano-based ballad song, it begins with a piano melody, followed with electric guitar lines, that accompanies slow-tempo drumming. It was released on 3 April 2006 as the fourth single from "X&Y". The song was released as a radio-only song on United Kingdom radio stations. It appeared on the United States "Billboard" Hot Adult Contemporary Tracks chart and peaked at number 37, making it Coldplay's first appearance on that