Opal Shard
The town spends it on these buildings: Adventuring Party, Alchemist's Hut and Trapper, for their levels (each building’s page has the costs). Crafting an Uncommon jewelry from the equipment dictionary costs it, and disassembling one gives it back.
Given on every clear by
 Bat Cave Area 3 | 1 |
 Bat Cave Area 6 | 1 |
 Bat Cave Area 8 | A third, rounded down |
 Bat Cave Dungeon 1 | 1 |
 Spider Maze Area 1 | 1 |
 Spider Maze Area 4 | 1 |
 Spider Maze Area 7 | 1 |
 Spider Maze Area 8 | A third, rounded down |
 Spider Maze Dungeon 3 | 1 |
Other ways to get it
| The Shop | 10 Onyx Shard each |
| Gathering Shards | With a Spider or Bat pet |
| Swarms | A beaten swarm in an area that gives it, at 200 score or more: 50 clears’ worth |
History
Changes to this material across game updates.
- Other languages +Odłamek opalu+เศษแร่โอปอล
Other languages: オパールの欠片蛋白石碎片Fragmento de OpalaÉclat d'Opale오팔 조각Odłamek opaluOpalsplitterFragmento de ÓpaloОсколок опалаOpal Parçasıเศษแร่โอปอล