Crystals

Crystals are objects around the maps that you can mine. If mined in the Enchanted Gardens, a pearl will appear in its place. Most of the time, they appear a Violet Blue color. There is a very slight chance a player will get a Pink pearl, or a Light Green pearl, instead of the Violet Blue pearl. The Pink pearl gives you 5 pearls, the Light Green pearl gives you 10 pearls. The Violet Blue pearl gives you 1 pearl.
For the Shooting Stars Event, you had to mine the crystals for a chance to win the Star's Align Halo Crown.