We always use natural stones, even if we have to import these.
We just prefer to think that natural/the original is best.
However, fabricated stone works do have certain advantages...
such as -- these can be installed where natural stone may not be practical to install cost-wise;
uniformity is easier to achieve
labor cost comes out cheaper since there is no time wasted in making "asinta" or fitting, and/or trimming the natural stones to appropriate sizes
I share the view too that these "fade" in time.
But these also have the advantage of not being as prone to damage or aging due to pollution, water exposure, etc.
What you can do is to ask the supplier/manufacturer/importer for written assurance that the fabricated stoneworks will maintain its color for x no. of years.... If they are willing to put down 15 years... what the heck, that is just as good as natural stoneworks.