Saphires are made off aluminum oxides http://en.wikipedia.org/wiki/Sapphire and they are already used in helicopter windows.
Being a web dev myself, I do appreciate the importance of optimization but static files are definitely not the cause of such performance issues.
Usually, it's either application load or database load.
These "experts" are giving really "obvious" comments. The point of architecture problems is most likely the culprit, or simply, they've just haven't planned very well for the amount of data transfer that the system would have to handle.