Prismite

Prismite is a type of stone found underneath deep oceans.

Natural Generation
Prismite generates in large quantities underneath deep oceans, along with all deep ocean variants. It is also the main underground block of Byatis.

From Block Loot
Prismite can be mined with any pickaxe. With Silk Touch, it drops itself; without Silk Touch, it drops cobbled prismite.

Smelting
If cobbled prismite is smelted in a furnace, it turns into prismite.

Smelting
Prismite can be smelted into smooth prismite.

Crafting
Prismite can be crafted into its slab and stair variants. 4 prismite can be crafted into 4 prismite bricks.

Stonecutting
Prismite can be cut into prismite slabs, prismite stairs, prismite bricks, prismite brick slabs, and prismite brick stairs.

Lore
Prismite is a type of stone, likely sedimentary. It is similar to limestone, having many elements composed of ancient, dead organic material. It bears many similarities to prismarine, an aquatic rock similar to sandstone.