Here are bags of Black Tourmaline crystals are from China. They are a good size for gridding. Let them do wonders to clean your energy field after a bad day. And keep it on your desk at work to clean up the energy of others around you who are in a bad place. Black tourmaline also helps you learn life lessons so you can be stronger within yourself and this deflect negativity coming at you.
I do not know where in China they are from, but they are completely natural and a nice strong crystal like Australian ones. You can carry in pockets unlike the Brazilian rulers. Select either 5 crystals at 68 g for bag. Or get 4 crystals in bag with a weight about 44 g. Photo is a guide to the “10 in a bag” crystal size. The 4 and 5 crystal bags have crystals that are bigger. Dimensions are for the bag.