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
Substance Abuse (band) Substance Abuse (band) Substance Abuse is a Los Angeles based hip-hop group consisting of the duo Subz (Justin Hollingsworth) and Eso Tre (John Heath). The group dropped their debut single "What The F**K You Rhymin' For?" in 2000 on the now defunct Ground Control Records, which was followed by the single "Can't Call It"/"No Guarantees" featuring P.E.A.C.E. and Thes One on Weapon Shaped Records. Their debut album, Overproof, was released in 2006, and features cameos from Kool Keith, MF Doom, Motion Man, Saafir, and Rasco. The album received four stars in URB and Scratch Magazine. The group released their sophomore