Daeyalt ore

Daeyalt ore is a rare ore that can only be mined by players with a 20 Mining during and after the Darkness of Hallowvale quest, gaining approximately 17.6 experience. Currently, it cannot be smelted into a bar using the Smithing skill.

Daeyalt ore is found only in the Meiyerditch mine in northwestern Meiyerditch in the Sanguinesti region. A player gets 3 ores from each rock wall.

If players are sent to the mine by the Vyrewatch, they must mine 15 ores and place them in the mine cart, then ask to be released from the mine.

Speculation
The similarity between the spelling of Daeyalt and the pronunciation of 'day out' and the anagram 'late day' has led to speculation that this ore may prove to be dangerous or beneficial to vampires. This speculation was fueled by Master Smith Thurgo's reply in the Postbag from the Hedge (issue twenty-two) claiming that the ore had "some magical hoobery-joobery on it" and that "those vampire types are after the hoobery-joobery".

Prior to the graphical update, the Mine Carts in the Mourner HQ enroute to the Temple of Light had the examine "Daeyalt ore is placed here". Unfortunately, Mine Carts no longer have an examine, so it's unknown if this was just a glitch as a result of Jagex dropping the same Mine Carts as in Meiyerditch into the Dungeon (without checking the examine), or if the Slaves are actually mining Daeyalt.

Messages
For rock: For ore:
 * Prospect - "This rock contains some strange properties, none of which you're sure of."
 * Examine - "Looks like normal rocks with a faint glow."
 * Examine - "This needs refining."
 * Use on furnace - "You're not sure what sort of effect you would get by putting this into the furnace."