Salt Rock Spheres- Pakistan Small size $6.50 each  GOOD PRICE M163 - Karachi Pakistan Salt rock that has been ground into the shape of a sphere. This material was mined from about 300 feet under ground near Karachi, Pakistan. The color of this material is caused by the salt-loving bacteria, halobacteria, that populated the water that this salt formed from when it evaporated. Don't worry, the bacteria are quite inactive and harmless to people. We have sprayed this batch with a light coating of clear acrylic to make them more stable and keep them from turning chalky later. We had these made and shipped to us from Pakistan. We haven't seen any like this on the American market. Far as we know, we're the only ones that have these. Large size $12.00 each  (You can always remove items from your cart later if you wish)