The Ornamental Swirl Stone Wall is a grey-colored stony building-block with 2 rows of S-shaped greek-like ornaments on 4 sides and a slightly fissured stone-surface on 2 sides. It can be crafted in your Crafting Menu (default key "Q") or at any Crafting Table in worlds created before R22 on September 16th 2015, after the recipe has been unlocked upon buying it in the Store as a part of the "Decorative Stone Pack" (as of R24 in November 2015). To craft 8 (blocks of) Ornamental Swirl Stone Walls, you'll need (as of R24 in November 2015):