Show diamond probable that diamonds ormid by crystallization liza tion from silicate hagmas magmas it occurred to that they might bo prepared artificially in this way corresponding to the analysis of n diamond bearing breccia with carbon added was subjected to intense heat when the mass had cooled naso cutely colorless and transparent octa herrons were found bavans an average diameter of 05 millimeters they ruby and were combustible when heated with oxygen the results appear to strengthen the theory that natural diamonds have been formed by crystallization awni silicates |