A diamond is endowed with the densest crystal lattice of all materials.
Thus, on the scale of relative abrasive hardness it achieves the maximum: hardness 10.

 

•	Refraction index 2.417
•	as a result of its dispersion, it is able to split daylight into all the colors of the spectrum
•	a diamond is also possessed of one of the highest thermal conductivities
•	the specific gravity of a diamond is 3.52