AUSTIN (KXAN) — Sunday dawned with mild conditions with temperatures in the 40s and 50s, along with dew points in the 40s and 50s. There was a little rain overnight between around 2 to 5 a.m ...

There's a lot of pressure, the weight of the overlying rock bearing down, so that combination of high temperature and high pressure is what's necessary to grow diamond crystals in the Earth.

Department of Physics, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark ...