Obsidian Shard

Obsidian Shards are an item available in both Subterranean Switcheroo and Obsidian Ore.

Four Obsidian Shards can be crafted into an Obsidian Block.

Obsidian Ore will drop 2 obsidian shards when mined with a diamond-level or higher pickaxe.

In Subterranean Switcheroo, using a Sifting Tool on an Obsidian Block will provide you with three Obsidian Shards.