Name this coral?
 

Attachment 15730

Bought this the other day and forgot to get the name. It's pure white.

Any ideas?

Alveopora

Pure white lps (unfortunately) tend to be coloured corals that lost their symbiotic algae (zooxanthellae). Hopefully this is NOT the case for your coral.

It's strange it doesn't have the tips/feathers off the polyp like alveopora but it looks the same closed up.

If this has lost its colour does that mean I bought a sick coral? Or it's going to die?

+1 Alveopora. Keep in mind, that like goniopora there are many different subspecies of alveopora.