Help With material ID

[welsbury]

Found this piece awhile ago and always wondered what the material was. You hopefully can see cleavage lines in it.It splits on a very flat and smooth plane.You can see where there is a drill spot on the side and above it on the edge you can see a little dip,that is where they started to drill edge. Could have been a necklace piece or something they were making. Could it be Calcite? It is foreign material around here. In last pic there is a round dome shaped piece that was real close when I found other. It is nicely smoothed also. I thought it could serpentine maybe.There is serpentine north of me.Both are fairly soft too with the dark piece the harder one

 

[old digger]

Your first piece looks very much like a Gypsum crystal, but it could also be Calcite too.

 

[welsbury]

Thanks much old digger for response.Will compare to Gypsum