Spell gem

Spell gems were magical gems created by the svirfnebli.

Description
A spell gem's function was to store a single spell; what level of spell could be stored was based on what type of gem it was created from. Anyone could cast a spell stored in a spell gem, but the higher level it was, the more difficult it was to do successfully. The creation process was kept secret by the svirfnebli.

Variations

 * Obsidian (cantrips)
 * Lapis lazuli (1st level)
 * Quartz (2nd level)
 * Bloodstone (3rd level)
 * Amber (4th level)
 * Jade (5th level)
 * Topaz (6th level)
 * Star ruby (7th level)
 * Ruby (8th level)
 * Diamond (9th level)