Mezzo in Italian means "half" or literally "middle" of something. This lava rock is the layer of cinders in between the black and the red. It is not a mix of the red and black but actually a natural blend of what may consist of the reds, blacks, grays and purple shades that are in this layer. The gradation (Size Variance) of this product may vary from load to load. The listed size is for averages only.
NOTICE: Product is unwashed and usually contains between 1-5% fines but never more than 20%. Color and gradation may vary. Roundness and sharpness may vary. Overall size may vary.