  Characteristic length of mass density resolution in dynamical reduction
models is calculated utilizing energy conservation law and viable cosmological
model with decreasing energy density of vacuum (dark energy density). The value
found, $ \sim 10^{-5}$ cm, numerically coincides with phenomenological spatial
short-length cutoff parameter introduced in the Ghirardi-Rimini-Weber model. It
seems that our results support the gravity induced mechanism of dynamical
reduction.
