Studded Ruinstone Block

Description
s are used as building Blocks in Portal Knights.

Source
s are not a basic resource of any island, but they can be found in structures starting around mid-game.

The best place I know to find good quantities of Studded Ruinstone block is on Port of Caul under the tower in the treasure chest complex. I have mined at least 200 blocks off the walls alone there. Each treasure room will have some as decoration on the walls, and the floor under the chests are also studded ruinstone. The tower is due east from the landing pad, it's the only tower in Port of Caul.

Crafting
The  is also an ingredient of:
 * Landing Pad
 * Ward of Protection

Trivia
Unlike other blocks, the Studded Ruinstone Block has the same texture pattern when placed on the floor, walls and ceiling.