The tourmalines are chemically one of the most complicated groups of silicate minerals. Because of their properties, physicists in the 18th century considered them a key to connecting theories on heat, electricity, optics, and magnetism. Tourmalines have a wide range of stability, from the Earth’s mantle to near-surface conditions. As a result, tourmalines provide information about the rocks in which they formed. Their transparency and variety of colors, in hues from ruby red to emerald green to electric blue, make the tourmaline one of the most versatile gemstones. Dr. Marian Lupulescu, curator of geology, will guide you on a journey through the beautiful tourmaline world.
This program includes a 20-minute talk followed by brief Q&A. Participants are welcomed to bring their lunches.