Beauty. Lisa Rosen

In 2012, Donald Clark retired and passed along stewardship of the IGS to the Rosen family, who were longtime members of IGS. Beauty. Lisa Rosen runs the day-to-day operation of IGS andThe Ganoksin Project, a technical resource website for bench jewelers and jewelry manufacturers.  Lisa strongly believes that IGS must remain a cost-effective, accurate, and comprehensive resource for all those interested in gemology. IGS is our passion, and it is a family business.