Q. With coordinate adjectives separated by a conjunction, there’s no comma: “A stable and sensible approach.” I assume it would be the same for contrasting adjectives: “A sensible yet volatile approach.” Though if you wanted to emphasize the volatility, you might set it off with commas: “A sensible, yet volatile, approach.” Does this all sound right?
A. That sounds right to us, though whenever you interrupt an adjective-plus-noun construction with an intervening phrase set off by commas, the result tends to be a little awkward. If you want to smooth things out while keeping the emphasis on volatility, try rephrasing. For example:
an approach that’s sensible yet also volatile
a sensible approach, albeit a volatile one
Or you could embrace the interruption by applying something stronger than commas:
a sensible—yet volatile—approach
a sensible (yet volatile) approach
See also CMOS 6.51.