Frostmaul Shards

This Winterspring item and object was used for a quest before the Shattering. Identical-looking crystals can still be seen in and around Frostwhisper Gorge, but they are no longer named, lootable, or otherwise interactable.

Source
This item dropped from Kashoch the Reaver, Frostmaul Giants, and Frostmaul Preservers in Winterspring.

They were also contained in Frostmaul Shard objects on the ground.

As a quest objective
These were required for Luck Be With You.

As an object
Lootable Frostmaul Shards were located throughout the Frostwhisper Gorge of Winterspring.