Ravenar
Ravenar, a glossy, black variety of tourmaline
that is also called schorl, is highly valued in the northern
half of Faerûn. The gem is less prized in other lands,
where it carries little value. Ravenar is commonly used for
inlay work on daggers, buckles, and the like.
A ravenar included in any wand with a spell that has
the sonic descriptor increases the save DC against the
wand’s effect by +1. If no saving throw applies or is allowed,
it instead adds +1 to the effective caster level of
the effect.
Material Cost: 1,000 gp.