News Archive

AGA 2015 Tucson Gemological Conference

The Accredited Gemologists Association held their annual Tucson conference at the Marriott University Park Hotel on February 4. This year, with 136 registered attendees, the association hosted one of the biggest conferences in their history. The…

Gem Note: Hauyne

Introduction: Haüyne is an extremey rare mineral, a member of the sodalite group, and is even more rare as a gemstone with the formula (Na,Ca)4-8Al6Si6(O,S)24(SO4,CL)1-2. It is sometimes seen in the literature as hauyne or…