Living Ruby

Source
This gem is mined from Fel Iron, Adamantite, Rich Adamantite and Khorium deposits, and by Prospecting Fel Iron Ore or Adamantite Ore.

It is also a world drop.

As an ingredient
Living Ruby is used in the following recipes:

Necklaces

 * Living Ruby Pendant

Trinkets

 * Figurine - Living Ruby Serpent

Engineering

 * Deathblow X11 Goggles
 * Furious Gizmatic Goggles
 * Gadgetstorm Goggles
 * Gnomish Battle Goggles