Curable organopolysiloxane compositions contain



(A) organopolysiloxane resins consisting of units of the formula

RaR1b(OR2)cSiO(4−a−b−c)/2   (I),

with the proviso that in formula (I) the sum of a+b+c≤3, in at least one unit of the formula (I) b=1, in at least 50% of the units of the formula (I) a+b=1 and in at most 10% of the units of the formula (I) a+b=3, based in each case on all siloxane units of the formula (I) in organopolysiloxane resin (A),

(B) organic compounds having at least one unit of the formula

CR32=CR3—CO—Z—  (II),

(C) initiators,




(D) fillers and
(K) amines,
wherein the radicals and indices have the definition specified in claim 1. When coarse and fine grained fillers are employed, the composition can be used to mold artificial stone.