The Pearlescent Coralium Ore is an ore added in AbyssalCraft. It generates within The Abyssal Wasteland. You need a Refined Coralium Pickaxe (harvest level 5) or greater in order to mine it.
This block can't be crafted.
When mined, the Pearlescent Coralium Ore drops a Coralium Pearl.
The Pearlescent Coralium Ore generates in The Abyssal Wasteland at ground level 10 and below.
Coralium is used for a lot of things in AbyssalCraft, this form can be used for special crafting (the first gateway key, armor plates, explosives etc).