Silver Cloud?

That's lovely!!

I believe the name is "Alpine White", not the "White Alps" they told you. These kinds of names confusion happens all the time with stoneyards.

I was thinking Silver Cloud, too. or Pretoria White.

There really is no naming convention for stones. Different yards will have different names, or even different stones with the same name. And they will mislabel categories too--I found marble labeled as quartzite. If you are concerned about staining or etching, really the only way to know is to get a sample and run tests yourself. (That's how I found that the "quartzite" was really marble.)