The Gembreaker is a Tracker Class dragon that appeared in Dragons: The Nine Realms. There are four gems on the back of its head that grow every time it sheds. The taller the gem spikes, the more powerful the Gembreaker. They also have little diamond shaped spikes on their whole body that can shoot up and out at their enemies. The spikes then grow back. There is one big gem on its tail that it uses to crush rocks, gems and its opponents.
This dragon does not shoot fire, instead it shoots a gel encased in a diamond like case. The gel explodes on impact. If by chance it does not explode on impact, then the gel oozes out and hardens within 10 seconds.
