Its not a lot different to fabricate quartzite except that it is so much harder than any granite that I've worked with. It really slows down your production and wears out the tooling and polish pads. Thank goodness for good machinery. Be careful of the translucence of quartzite. It's similar to onyx in that underlayment color differences can make it appear different shades. You have to be careful when mounting kitchen sinks. I normally use the T-31 anchor system but on quartzite we opt for a sink support frame.