GaN colloidal nanocrystals (NC) were prepared via pyrolysis of {Ga[N(CH₃)]_3/2}_n in a solvent mixture of trioctylphosphine (TOP), trioctylphosphine oxide(TOPO), and octadecene (ODE).  The product NCs were readily dispersible in a variety of common organic solvents.  The reaction has been run under a variety of different conditions in order to gain insight into the reaction mechanism and to examine the potential for tuning particle size.  Size selective precipitation was used to prepare GaN nanocrystal fractions with narrow size distributions, and these samples were characterized by XRD, TEM, absorption, and luminescence spectroscopy to quantitatively assess the size dependence of the electronic properties.