Sugilite the strongest stones to wear to give protection from negative entities, and its energy helps to remove negative attachments. There are many other excellent qualities that this stone brings to you as well. As it is a violet flame crystal.
Coyamito Agate (Laguna - Mexico) - Agate species are usually named after the location where they were found. It can get pretty confusing, but in reality there are only a couple of truly different types.