- Naturally Colored.
Tiny Set of 5.
Coal Rock Blocks are colored with black milk paint, supplied by The Real Milk Paint Co. It consists of raw earth pigment powder, casein (milk protein), lime, and a plant-based filler (edible). No harmful chemicals used.
Coal Rock Blocks are handcrafted from various wood types.
Every block is unique. The blocks shown will be different than the blocks you receive. Sizing can vary between a width/height of 1" and 2". Vibrancy of color depend on wood type.