The Dragonstone by Dennis L. McKiernan

"For as long as she can remember, the Elven Lady Arin has been besieged by visions from the past—or the future. But none has ever left her so shaken as the one that foretells the fall of Mithgar: images of raging dragons and brutal legions laying waste to everything in their path signifying a devastating war that will threaten the land.
 
There is more to the prophecy than a warning—riddles within the vision that Arin must decipher if she is to prevent the forthcoming destruction. And it will take a journey across countless leagues—connected to a relic of immense power known as the Dragonstone—to find the answers to Mithgar’s salvation..."

Mass market, a nice copy!