Countertop Materials in Desert Heat

The usual mistake is picking a slab under showroom lights and never asking where the sun lands in the actual kitchen. The breakdown sitting on palm springs kitchen remodeling news today cg lists the countertop questions that come up in Palm Springs, CA, in the order a fabricator asks them.
Sun through big windows

Desert modern houses, many facing the San Jacinto Mountains, carry large panes of glass, and a counter beside one takes direct sun for hours. Natural granite and most quartzite do not care. Quartz, which is stone chips bound in resin, can discolor or warp if a surface gets hot enough, and some manufacturers restrict it from outdoor use and from sustained direct sun. Reading the manufacturer's own installation sheet settles that question.
Heat from the kitchen itself

A hot pan set straight down is a bigger risk than a Colorado Desert summer. Resin in quartz and solid surface can mark at pan temperatures, while granite and quartzite take it. Trivets are still the habit, because thermal shock can crack a stone near a seam or a cutout.
Slab thickness and edges
Slabs come in different thicknesses, and a thinner slab looks lighter on a modern kitchen but needs full support and careful handling. A thick mitered edge gives a heavier look and hides plywood laminations. Sharp square edges chip at the corners, so a small eased radius is the practical choice in a house with kids.
Seams and cutouts
A seam belongs where the stone is supported and away from the sink and cooktop cutouts, which are the weakest spots. Long runs in a house with an island usually have one seam, and a good fabricator lines up the vein across it. Sink cutouts need rounded inside corners, since a sharp corner is where the crack starts.
Sealing and care
Granite and some quartzite take a penetrating sealer, applied after install and renewed on a schedule the fabricator gives. Quartz and solid surface need none. Dry air does not harm the stone, but hard water in the Coachella Valley leaves mineral rings around faucets, which a stone safe cleaner handles.
Templating and install
A fabricator templates the counters only after the base cabinets are set and level, with the sink and cooktop on site. Cutting happens in the shop, and install follows within a couple of weeks. Moving a cabinet after templating means a new template and a new slab cut, so the cabinet layout is final first.