Education & Courses, News Free gem courses online The Swiss Gemmological Institute SSEF has launched a series of free-of-charge, online courses, entitled “Understanding Gemstones.” With each covering a…
Gemstones, News SSEF scientists author first published study of new high-quality emerald type from Afghanistan BASEL, SWITZERLAND: MARCH 24, 2021 – The first detailed study characterising an emerald type from Afghanistan that has recently become…
