The quality of YALI® remained constant over the last 30 years due to the homogeneity of the deposit on Gyali Island. The production of various graining, the possibility of mixing them freely and large stocks available all year round ensure high flexibility and efficiency of the certified production of the quarry.

Please find EN, ASTM and CE-certificates here.


is an organically and inorganically pure natural material,

  • and thus very environment-friendly,
  • has a low volume weight,
  • has excellent insulating properties,
  • has sound deadening properties,
  • is fire resistant,
  • has excellent mechanical strength,
  • has consistent white color, and
  • is homogeneous of quality.