Magicite

Magicite is a crystal that grows in places where powerful magic permeates the earth or air. Usually found deep underground, and in some extremely rare cases, in undiscovered surface areas that have been sealed off or are hard to reach such as up in the mountains or in secluded shady glades encircled with thick copses, or in gullies and ravines untouched by settlers or explorers.

Collection
Since it is so rare, and difficult to harvest, only the most well-funded organizations can afford to effectively locate and harvest Magicite. The Merchant's Guild and the Great Divination Wizards are two such organizations; the Great Diviners use the Magicite themselves for their spells and divinations, and have long since mastered the proper handling and care of the valuable crsytal, while the Guild mostly just transports it and scouts for deposits, forming a symbiotic relationship between the two organizations that has proven to be extremely lucrative. Since it take centuries to grow, it is closely protected and regulated when found, and some locations are even completely off limits to everyone except for authorized members of the Guild or the Great Diviners Circle.

Effects and Alchemy
Magicite can be ground up into a powder and use din potions and laced in inks to empower spells and increase the power of mages to new heights, but it is addictive when used frequently, though with little other ill effects. Extreme addiction can lead to a volatile withdrawal period if not weened properly.

Magicite potions can restore expended spell slots for arcane users, as well as empower divine and arcane spells to higher levels than normally allowed by the caster.

Magicite ink enables almost anyone to shape a spell into new forms and form new spells entirely based on the arcane formulae used, and has been known to enhance created scrolls and divine writings, even allowing one to commune with their deity directly in cases where the spell would only allow a limited communion.