Here is a superb cluster of dravite crystals, the manganese-rich member of the tourmaline group (for over a hundred years it was believed to be uvite). The crystal are set on slghtly smoky quartz, and have good trigonal terminations. They have spectacular, wet-look luster and are colored jet black. I collected this  specimen at the famous Power's Farm locality in upstate New York in 1996. There is no damage.