Here are published articles from various sources relating to the treatment of Sapphires.
Please click to view any of the following:
2. “Why Natural Untreated Sapphires?” Preston Holmes, Writer, Editor and Consumer ****Excellent
writing, highly recommended reading
Why Natural Untreated Sapphires?
3. “If You Can’t Stand The Heat” Gary Roskin, Senior Editor: JCK Magazine (3 part series)