Luxite

An exceedingly rare prismatic form of diamond. Even small slivers of luxite can produce very powerful enchantments, usually with a radiant or healing effect. It can be found in chunks all over the world, as if fallen from above.

Luxite is sometimes called Shards of Bifrost after the great rainbow bridge that connects the planes. Some have theorised that Bifrost travel generates these crystals, and that is why they fall from the skies, but no mortal knows for sure. Luxite crystals can be used in place of diamonds as the material component to a spell.

If a diamond is subjected to 10 radiant damage for every 100gp it is worth over a minute or less while in a Hallowed location, it is converted to luxite, doubling its value.