M439 - Natural rock salt mined from Pakistan. Ancient seas evaporated and left huge deposits of salt that has crystalized into massive layers of rock salt. 
These specimens come from a couple salt lamp that had cracks in them.  
Rather than toss them out, Ray got his hammer out and bam,  bam!....  Rock crystal specimens.

GOOD PRICE $2.60 each.

GREAT VALUE

$4.60