Art Works in STONE

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It is a material in which the iron is predominant and which content in carbon is generally lower than 2 % and contains other elements as the phosphorus and the sulphur. Though a limited number of steels can have contents in carbon superior to 2 % this one is the habitual limit that separates the steel of the smelting.
The steel is an iron descarburado, with a proportion of carbon lower than 1.8 % who can acquire other properties by means of thermal or mechanical treatments.

This material is used from very ancient for being abundant in the nature. The stone started being in use from the paleolithic stage.
The most common stones in the sculpture are: the limestone, marble, sandstone, alabaster, granite, diorita, soapstone, quartz and jade.