Grimoire

A grimoire is a special magic item that is often created during the elevation of a journeyman magician to the rank of master within the Guild of American Magicians.

Appearance
A grimoire's appearance gradually changes throughout its existence. The grimoire is tied to the condition of its master, so as the master matures, so does the grimoire. Each grimoire has a unique hue to it, though what causes the coloring is unknown, as the original crystal is transparent and lacks any hint of color.

A freshly-made grimoire has a small crystalline structure. The grimoire lacks any intricate markings or structures on the main body, and it gives off a dim light.

As the grimoire matures, the crystal grows and becomes more intricate in its structure. Often parts of the crystal split off and float in a tight orbit around the main body. The most mature grimoires may have multiple rings of orbiting crystals and are often called pieces of art.

Creation
A grimoire is created by binding a ghost's tear to the source of the prospective owner. A ghost's tear is a rare mineral found on the reverse-side, but it is unique in that it takes on special properties when exposed to a magician's source.