Last week, we showed you more of Beryll Roehl’s wonderful LEGO test brick photographs. Today, we’re going to look at Norwegian collector Fabian Lindblad and his equally enjoyable snapshots of marbled bricks. Marbled bricks are named such after the swirls of different colored plastic they contain. Some elements are intentionally marbled for sets, while others are the result of changing over the plastic in a mold from one color to another. In the past, LEGO employees occasionally took them home to share with their children. Today, the standard procedure is to recycle them so they don’t leave the building. However, if you are really lucky, you might just find a marbling error in one of your latest sets.

See more awe-inspiring images of these highly collectible bricks