4-5.5lb chunks.
 
The grey color of these unique lamps comes from a rare vein of Himalayan Salt. ... Equal parts home décor and wellness tool, this Himalayan salt lamp (made from 250 million-year-old ancient salt crystal) emits an ambient glow and negative ions which naturally recharge the air and reduce allergens.
 
These are official Pakistan Himalayan salt lamps , switch on/off plug, wood base - lovely addition to your calming space.