The identification of hue is used to separate the small color variations between the productions or in the same production period, this variation is inherent in the ceramic tile manufacturing process and occurs when the materials used pass through the burning process.
V1Uniform appearance, the differences between pieces of the same production are minimal.
V2Light variation, clearly distinguishable differences in texture and / or pattern within similar colors.
V3Moderate variation, the colors present in a single piece will be part of the colors present in other pieces and the amount of colors in each piece may vary.
V4Substantial variation, random color differences from piece to piece, so that one piece can have totally different colors from the others. That way the final result will be unique.