This unique pink halite (rock salt) was collected in brine pools at Searles Lake, in Trona, California. The halite is colored by millions of halobacteria that survive inside salt crust and by algae that live in the extremely saline waters of the lake. The lake is actually more than 5 times the salinity of sea water. Over the course of the hot, dry summer, the water evaporates from the surface of these ponds, providing an opportunity for salt crystals to grow slowly. Under these slow crystallization conditions, individual salt crystals can become quite large - up to 2 inches across. We have four specimens at the shop! A wonderful addition for your collection!