SEALING
Confirm whether your fabricator will seal the new counter — usually a last step after install — or if they expect you to.
If this is in your hands, no need to fear. While it was once recommended that you seal granite every year, products like Dry-Treat now last for 15 years on a typical stone, and are relatively easy to apply.
Some quartzites are more porous and benefit from several coats of seal, more regularly. And marble should also be regularly protected around the faucet and soap dish.
As always, your fabricator is a good source of advice. Ask about their experience with stone similar to what you picked and the care they recommend.