Tourmaline forms in metamorphic and igneous rocks. it is part of a family of minerals. Its colour varies enormously depending on the impurities present in its structure. Black tourmaline is one of the most common forms of tourmaline. It can be found all over the world including beaches in Cornwall.
Average weight, 5g. Prices are per item. Photographs are representative of the items offered for sale, but the item you receive may not be the one in the picture.