ID help please

[Olliesshop]

I'm a newbie, so I'm not even sure if this is an LPS coral or not. It's pretty small, about 20mm diameter and came on a piece of Florida live rock. Any help would be awesome :)

https://olliesshop.smugmug.com/Aquariums/Reef-Tank/i-Bpd5gJw/0/L/DSC_0522b-L.jpg