News Archive

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…

World of Gems Conference IV

In this the fourth biennial international gem conference, speakers from varying areas of expertise offered lectures on many subjects. The program began with a historical look at the beginnings of the GemGuide, with the many…