Minecraft Earth:Adventure Crystal

An Adventure Crystal $$ allows the player to place a private adventure at any location and invite friends to join the adventure.

Obtaining
An adventure crystal can be obtained from:
 * Chest tappables
 * Adventure Chests
 * Daily login challenges

Rarity
Adventure crystals have different rarity:
 * Common crystal
 * Uncommon crystal
 * Rare crystal
 * Epic crystal
 * Legendary crystal

Rarer crystals generate larger adventures, and contain more valuable loot in the adventure chest. The player's crystal inventory holds a maximum of three crystals of each type.

Interface
Tapping the crystal icon shows the crystal adventure interface, which shows the crystals collected by the player and their rarity. Tapping a crystal shows the adventure duration as well as a graphic representation of the size of the adventure and the reward.