Focal Gem

Focal Gems are special items that hold arcane knowledge within them, either by purpose, as a prism shaped my an arcanist, or merely from the elemental or magical properties inherent in the exotic materials.

While attuned to a Focal Gem, the user has the associated spells added to their class list, and as long as the gem is with them, the spells are considered know, or prepared, without counting towards the user's maximum spells know or prepared. The spells must be cast with the user's spell slots as normal.

If the user loses the gem or becomes unattuned from it, they lose the knowledge gained from the gem unless they have learned the spell from another source.

DM's are encouraged to come up with their own spells for gems as fitting their campaign, these are some examples:

Bright Ruby Level Spell 1st Burning Hands 2nd Scorching Ray 3rd Fireball

Smoky Ruby Level Spell 1st Hellish Rebuke 2nd Flame Blade 3rd Blinding Smite

Sapphire Level Spell 1st Armor of Agathys 2nd Snilloc's Snowball Swarm 3rd Sleet Storm

Arcanist's Prism Level Spell 1st Absorb Elements 2nd Levitate 3rd Glyph of Warding

Emerald River Rock Level Spell 1st Faerie Fire 2nd Misty Step 3rd Speak with Plants

Dense Iron Geode Level Spell 1st Earth Tremor 2nd Maximilian's Earthen Grasp 3rd Erupting Earth

Electrum Coil Level Spell 1st Thunderwave 2nd Mirror Image 3rd Lightning Bolt