When cut and polished, aventurine is alluring as its name. It resembles misty quartz, but contains glistening flecks of green that give it a unique sheen. The witches of Rashamen are said to use aventurine for invocations, evocations and spirit work.
You can exchange this gem for gold at any merchant.
In Storm of Zehir the gem is a component in crafting wondrous items.