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The Reason of Natural Stone Color Variations

Feb 24, 2021

The Reason of Natural Stone Color Variations

Stone is in the natural environment, after at least a hundred million years of complex physical and chemical changes, coupled with the evolution of geological movement and formed.Many internal and external factors will cause the kaleidoscope of stone.This change, is objective, no matter how late processing, can not be changed, all the final formation of the stone color Variations.


Reason 1: surface and deep mines

Stone is mined in batches from the mine, from top to bottom and from outside to inside.In the natural environment, the outer stone is more exposed to water, air and sunlight.


Deep inside the stone, there is no such environment.Therefore, there are differences in color between surface ore and deep ore.


And deep mining out, in the sun, air, water and other new environment, stone will also change, produce color Variations.


Reason 2: the mineral content is not uniform

The base material of marble is calcium carbonate (limestone).In addition to the base minerals, various elements and minerals are mixed together to form the ever-changing colors and textures of the stone.


Take the stone of South America for example. The geological movement of South America is strong, and the underground is rich in copper ore, iron ore, and all kinds of metal minerals.As a result, stones produced in South America are usually of varying grain lines and rich colors.


Minerals are not evenly distributed in nature, otherwise humans would not need to explore for them.This uneven, resulting in differences in the color of stone.


Reason three: mining and processing methods are different

The stone material mined from the mine is usually a whole piece of raw material. The raw material needs to be cut into one piece. We call it a big board.


In the processing of raw materials, there are different cutting trends.This processing difference, in the stone processing, even if very attention, can not completely avoid, cut out of the plate, there will be more or less difference.


Reason four: the surface processing degree is different.

The same stone species, wool and smooth color is not the same.


In the smooth surface, polished to 10 degrees, and polished to 50 degrees, 70 degrees, 90 degrees, the difference is also very obvious.The brighter the grinding, the more obvious the stone pattern and color, the more bright;The hairy surface has a hazy beauty.