Imagine an unsaturated(No Ca(OH)2 (s) just Ca2+ (aq) and OH- (aq)) aqueous solution of Calcium Hydroxide.
Is the following equilibrium present in that solution and does the transparency of an unsaturated Calcium Hydroxide vanish after a while?
$$\ce{ Ca^2+_{(aq)} + 2OH- _{(aq)} <=> Ca(OH)2_{(s)}}$$