To ur answer of toxic questions/fears from treated ruby, by most of my appraisers, one would have to grind up & eat a treated ruby to do any harm to ones self-the stone is sealed within itself so to speak under high temps. No harm to the wearer under normal wearing. The stones are a little more open to comming apart if handled roughly, cleaned ultrosonically, or steamed for long periods. Clean with mild soap/warm water & soft brush & enjoy. Most stones show very well & with little or no care & one may never know of the treatment unless shown to an appraiser w/knowledge of treatment or a lab. Still a natural ruby, only enhanced & stabilised-steve...