News Alert - Tanzanites May Now be Found with Coating!
Yes, more sad news to report in the gemstone world. Another treatment/enhancement has been discovered in Tanzanite. The Red Andesine Feldspar that has been seen in quantity over the past few years, has been proved to have been enhanced in color. Now, another treatment to watch for is smaller Tanzanites with very good color. The coating has been observed in larger Tanzanites also, but small stones with fine color should be suspect.
You can visit the article on the GIA's website:http://www.gia.edu/newsroom/608/30743/news_release_details.cfm