Mosaics and marble tiles is an interesting experiment only the daring can try. Let’s not forget that both tile options are pricy thus finances can be a problem. But a trick is to always use more of one less of the other; you can have an entire bathroom carpeted with Crema Marfil marble tile then let the backsplash or bathtub face have glass mosaic.
There are plenty of places to borrow glass mosaics ideas from. It could be a website like Houzz or Pinterest or a magazine article dedicated to home interior tips. For more visual appeal, blend glass with marble and see what you get out of it.