Granite is extremely durable but not indestructible. It’s highly resistant to heat and impervious to cold, but because it is natural stone, it can chip if misused or subjected to a heavy blow. It is generally scratch-resistant. Minor scratches can be repaired.
Quartz is also durable. No sealing is required and they will not stain. Because quartz is an engineered product and more consistent, it is less likely to chip. While it can tolerate average cooking temperatures, extreme and sustained heat or cold can lead to warping, cracking, and discoloration, which are not easily repaired. They should also not be installed near large windows where they’re exposed to sunlight for hours on end as the sun can impact quartz’s overall appearance.