Stoneshaper solution
From Vanathul Wiki
description
A solution used by alchemists, sculptors, masons and even some miners. When this semi viscous liquid is applied to a stone surface it softens up the previously hard mass to the consistency of clay. A standard measure of Stoneshaper Solution affects up to 15 cubic ft. like the stone shape spell.
A vial costs 750gp, which makes it prohibitively expensive to most common purposes.
Like explosives, Stoneshaper Solution is a controlled substance in some cities due to its destructive capabilities.