Tourmaline (var. Dravite)

This impressive specimen consists almost entirely of massive tourmaline with only minor white quartz matrix, highlighted by a prominent lustrous tourmaline crystal from the classic Powers Farm occurrence near Pierrepont, New York. The crystal displays broad, flat, highly reflective prism faces with excellent lustre, making it an outstanding representative of the robust Grenville tourmalines from this historic locality. Fine specimens from Powers Farm have become increasingly difficult to obtain, adding to the appeal of this exceptional example.

Tourmalines from Powers Farm were historically identified as schorl or iron-rich uvite due to uncertainty surrounding their composition. More recent analytical work has shown that most specimens are compositionally dravite, although zoning into uvite has been documented within some crystals. This complex mineralogy, combined with the locality's long collecting history, has made Powers Farm one of the classic North American tourmaline occurrences.