Thermoplastics, in basic terms, are melt-processable plastics (materials that are processed with heat). When enough heat is added to bring the temperature of the plastic above its melt point, the plastic liquefies (softens enough to be processed).
Where diamonds are found in the United States - Wyoming. Diamond Kimberlite pipes have been found in Wyoming, near the Colorado-Wyoming state line area referred to as the Aultman, Ferris and Schaffer kimberlites. The Herkimer Diamond Mine and the Ace Of Diamonds Mine - New York.
Susie Clark, of Evening Shade, Arkansas, found the diamond on Thursday at Crater of Diamonds State Park. The 3.69-carat gem is teardrop-shaped about the size of a pinto bean. Park interpreter said it's the largest of the 122 diamonds found this year.