Evening Republican, Volume 22, Number 140, Rensselaer, Jasper County, 9 June 1919 — Why Diamonds Burst. [ARTICLE]

Why Diamonds Burst.

That diamonds burst is an old idea, which has been variously explained, It has been thought that the stones have been fractured by violent eruptions in the inclosing rocks, by sudden removal of pressure around them, or tn. the smoky specimens by spontaneous breaking up. Dr. J. R. Sutton concludes that the breaking usually results from the minerals inclosed. These may be garnet zircon, Ilmenite or iron pyrites, and such crystals, under ordinary heating at least, have so much greater expansion than the diamond that they would exert great pressure. ‘