Crystal Glare
an excerpt

Summery: In the land of Yavn - where everyone has a magical gem to help them with chores - war is raging. Their neighboring country of Shorion declares war, and Yavn doesn't know about it until about a week beforehand what was happening. As Shorion battles inward to Yavn, they take slaves along the way.
Six teenagers are among those taken and sold to rich families in Shorion. Will they escape, and what condition will Yavn be in if they manage to return?