Due to the nature of rock salt, this product may become clumps Thank you for your understanding. 17.6 oz (500 g) natural salt that is perfect for Chinese origin salt. Underground 1000? It is a deep rock salt created by pumping salt in the ancient terrest, which has been thought to be over 100.0 yards (3,000 m) deeply digged well to a depth of 3,000 m.