. The previous link is related to Moissanite. In the following figure the fit is obtained by means of an asymmetric q-Gaussian. Fig. : Best fit (blue) onto RRUFF ID R150016. An asymmetric q-Gaussian is used, with a q-Gaussian to adjust the left wing. The minimized sum of the squares of the deviations is equal to 1.5 x 10 -5 (sum from 1 to 440).