Yes, but you don't want a flush reveal which causes an elongated silicone joint that frays, catches crud, and turns black. You want a slight positive reveal please. No elongated silicone, no black crud, no maintenance, and looks great.

Hi Joseph, I remember you’ve recommended a positive reveal many times, thank you for that. How much of the undermount sink should protrude from the countertop? I’m about a week away from templating so your advice is very timely!

My sink was installed with a negative reveal. Is there any way to change it now?

It can be changed but I'd expect to pay $500-$1,500.00 to do it.