The stuff you buy for that purpose is just plain, ordinary salt.
You can buy a Naruto necklace in the "Related Links" belowAmazoneBayBonanza
In a necklace shop.
Rock salt is not a rock...its just a salt that can be extracted from salty water especially from sea water.
There are many places where one can buy a knot necklace. One can buy a knot necklace from popular on the web sources such as Overstock, Amazon, and eBay.
The address of the Salt Rock is: 5575 Madison Creek Rd, Salt Rock, 25559 9801
One can buy his/her mother a pearl necklace by going to a jewelry store. Alternatively, you can also shop and buy a pearl necklace from a different location.
Rock salt is a chemical sedimentary rock.
Rock salt is chemical!
Rock salt and table salt are both sodium chloride - NaCl; table salt is the pure form of rock salt.
mixture of rock particle and salt
Rock salt is not flammable.