The Crystal Chalice is an item carried around by Caravanners in Final Fantasy Crystal Chronicles.
In Final Fantasy Crystal Chronicles, the Crystal Chalice is used to carry drops of Myrrh. Large Crystals protect the people in the world from the Miasma that plagues it, but this protection wears off over time. Drops of Myrrh are needed each year from Myrrh Trees to renew the Crystals. Caravans from each village and city must collect these drops with the Crystal Chalice.
The Chalice also contains a shard of a crystal to protect the members of the Caravan when traveling through the Miasma. In Multi-player Mode, one player must carry the Chalice around when in a dungeon, and in Single Mode, a moogle named Mog carries it around. Each Miasma Stream has an Element which changes each year and can only be passed if the Chalice contains the same Element.
The elements of the Crystal are Earth, Wind, Fire, Water, and Unknown.
A Crystal Cycle is completed when the Caravan collects one drop of Myrrh from the Myrrh Tree after defeating the boss of that tree's dungeon. The Caravan cannot receive another drop of Myrrh until the Myrrh Tree replenishes itself after two years have passed. The level and its monsters become increasingly difficult with each passing Crystal Cycle.