Kitchen countertops are Chinese granite slabs, which come in any size
you like so long as it's 8' by 25½"; your choice of front side
bullnose or three sides bullnosed. I borrowed a little wet/dry circular
saw w/diamond blade from a tile setter friend to cut the slabs, and hired
a helper for a half day to do the job—those slabs are heavy!.
The countertops sit on ¾" plywood underlayment, and are bedded in
silicone, a continuous bead along the edges and blobs spaced about 3" in
the field. On the sink side, the 12' length is made of two 6' sections
epoxied together; the sink cutout is done after the silicon and epoxy have
set up, since the skinny bits would be very fragile otherwise and there's
a good chance of breaking them.