Process for manufacturing agglomerated stone slab

A process for manufacturing an agglomerated stone slab, the process comprising:

• sintering a mixture comprising
• a glass binding phase, wherein the glass is not soda lime glass;
• and
• a bulk matrix of granulates of agglomerated stone having particles of an average size between 0.1 and 1.5 mm, wherein the maximum particle size is consistent with a thickness of a final compacted agglomerated stone slab;
• wherein a ratio between the binding phase to the bulk matrix is between 0.34 to 0.55 by volume;
• and wherein said sintering is carried out at a temperature of between 450° C. and 700° C. to obtain the agglomerated stone slab, wherein said mixture contains no ceramic materials.