Pebble

There are currently three pebbles that are solely used for crafting trophies.

Crimson Pebble - Used in the craft of minor trophies (low level/rating).

Gleaming Pebble - Used in the craft of normal trophies (medium level/rating).

Sparkling Pebble - Used in the craft of major trophies (high level/rating).

The only way to obtain pebbles are to buy them from Glad Yator at -13,-29.