Crystallized blood from the first ever murdered elf, very powerful in a crysmage's hands
Glathien Nilmarian was the unfortunate elf who was the victim of the first ever murder of elf by elf, meeting his death at the hands of Cain, later the first vampire. Legend has it that his blood scattered across the ground where he fell, crystallizing into diamond-hard gems of dark red hue. It is said that these can focus great power if wielded properly by one opposed to the Sons of Cain. The location of the crystals is now long since forgotten.