  We derive new crystal melting models from Chern-Simons theory on the
three-sphere. Via large N duality, these models compute amplitudes for A-model
on the resolved conifold. The crystal is bounded by two walls whose distance
corresponds to the Kahler modulus of the geometry. An interesting phenomenon is
found where the Kahler modulus is shifted by the presence of non-compact
D-branes. We also discuss the idea of using the crystal models as means of
proving more general large N dualities to all order in $g_s$.
