Astral Ore

Emerald green ore that radiates arcane power found from occasional meteor showers that occur during the Celestial Solstice. Some believe these meteors are gifts from the Gods, others believe them to be a warning from those same Gods. Sometimes the meteors rain into inhospitable ocean or high reaching mountains. If harvested quickly while it’s smoldering from the impact (usually within a week after the shower) and can be forged with it’s own heat the items are incredibly powerful magic foci and weapons and are considered True Astral giving a +3 to weapons or armor crafted from it. True Astral items are exceptionally rare.
If the Astral Ore falls cold, but is harvested later, it loses quite a bit of its potency, but is still a coveted metal for forging and items. Depending on the purity of the Ore found it can be forged into a +2 items referred as an Astral sword/armor etc, and even “impure” Astral Ore can be crafted into a +1 quality item and are commonly called Twilight items.