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.
A Colorado woman found an 8.52-carat diamond at Arkansas' Crater of Diamonds State Park at Murfreesboro. The gem found by Bobbie Oskarson of Longmont is the fifth largest diamond found at the park since 1972. She named it Esperanza for her niece's name and the Spanish word for 'hope' and plans to keep the diamond.