I dearly love a wood fire. But after heating our house with wood for nine years, back in the eighties, we were cured of ever actually having a wood fireplace again. Still miss it sometimes, but I don't miss the ashes, bark, bugs, smoke etc. Guess I'm getting old.

Both have their place depending on taste and budget.

A lot of the time they build a core filled concrete block wall then construct another stone wall against it. The concrete block wall takes the job of retaining while the stone is for looks only. It does depend on what purpose the wall is performing. For example a retaining wall higher than 600mm (usually) needs engineering by a structural engineer which is easier to achieve with core filled concrete block on footings rather than just solid stone. You never mentioned the purpose of the wall which is a vital detail as there can be numerous ways to achieve similar outcomes.

Thanks dreamer...yes I have made a mistake in my title!  Meant to be engineered stone vs natural stone. And thanks for all comments. Was hoping someone who actually had experience with natural stone in these areas and had a negative experience would comment.