Taco Mamacita's sinks in Nashville
started with a 50/50 white:grey portland and used some coarse sand with small pea gravel. casted right side up! ground to expose aggreate then used my own lil blend of some stain z to color. the biz owner loved them!
I remember, my father and I built our house all about concrete/cement.
Not as fancy as this.. But our house back home( philippines) nothing but all concrete, concrete floor, concrete toilette bowl, concrete water tank, concrete countertops and sink and even where we cook our food was on the top of concrete cook top. I dont know how to describe it..oh my goodness, you name it. But that was 26 years ago..