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.
The Mine & The Park. It's finder's keepers at the Crater of Diamonds State Park in Murfreesboro, Arkansas. The only public diamond mine in the world, Crater of Diamonds offers you a one-of-a-kind adventure-the opportunity to hunt for real diamonds and to keep any you find.