Warren Boyd and Keith Barron, July 31, 2015
An overview of recently expanded sapphire production at the Gem Mountain mine near Philipsburg, Montana.
Read MoreMeenakshi Chauhan, October 17, 2013
Rare phosphorescence was observed in a synthetic sapphire, which had unusual properties not indicative of a particular growth method.
Read MoreBy closing this banner or using this site you agree to our revised Privacy Notice, Terms of Service and Cookie Policy.