There are many new Blocks added in Avalon. This page will detail some of those.
Heartstone Brick and Wall[]
Heartstone Bricks are crafted with 1 Heartstone at a Furnace for four Bricks.
Heartstone Brick Walls are crafted in quantities of 4 from 1 Heartstone Brick at a Work Bench. They can also be recrafted back into Heartstone Bricks by using four walls for each brick.
Iron Bricks and Walls[]
Iron Bricks were left out in vanilla Terraria, so they have been added in Avalon. They can be crafted from 1 Iron Ore and 1 Stone Block at a Furnace.
Iron Brick Walls are crafted in quantities of 4 from 1 Iron Brick at a Work Bench.
Adamantite Bricks and Walls[]
Adamantite Bricks were left out in vanilla Terraria, so they have been added in Avalon. They can be crafted from 1 Adamantite Ore and 1 Stone Block at a Furnace.
Adamantite Brick Walls are crafted in quantities of 4 from 1 Adamantite Brick at a Work Bench.
Grass Blocks[]
Grass Blocks are currently buggy. They are meant to place a Dirt Block first, then change it immediately to a Grass Block tile.