Air Crystal (Thaumcraft 5)

The Air Crystal is a glowing ore added by Thaumcraft 5. It is found in clusters of 1-64. When mined, it will drop 1-4 Air Shards (the number of shards it will drop is countable by looking at the block). Silk Touch is ineffective against the Air Crystal, and due to Minecraft 1.8's rendering issues, the block in the inventory appears as an item.