By now it would be ruined and worthless, but at least we would know where it went...................
It was believed the amber room was on Wilhelm Gustloff, which was torpedoed by a Soviet sub on 30JAN45 with the loss of over 9000 souls. Pictures of the wreck show evidence of Soviets cutting into the hull searching for it.
Another belief is it was in the basement of Konigsburg castle which was pretty well leveled by the RAF and Soviet artillery.
I believe the Germans paid for the restoration of the amber room seen today.
This is a better article