Blue color in salt

Can you share a photo ?

I dont have a photo. I only want to know if it is related with salt chemical structure or not.

i think it is about chemical content and PH.

see table on below link

https://chemistry.stackexchange.com/questions/33915/how-is-persian-blue-rock-salt-made

If you keep salt in copper pot, than copper sulphate can be developed which is green colour