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 multiple different rarities that being: the higher the rarity of an adventure crystal, the larger that adventure will be higher rarity crystals will also give off better loot in adventure chest.
 * common crystal
 * uncommon crystal
 * rare crystal
 * epic crystal
 * legendary crystal

interface
Tapping the crystal icon you will be sent to the interface. Here you can see the crystals you have collected and which rarity. You can also see the size of the adventure when activated.

As well as, the reward and duration of the adventure.