onyx, like the travertine, it is the result of the dissolution of the existing limestone, with the help of water and its repositioning as a new type of stone. In the limestone caves, onyx is made up of water droplets, as stalactites and stalactites. It is a very fine stone and quite fragile, which must not be installed in places with heavy traffic. This rock is characterized by translucency and can be enhanced by backlighting, creating true paintings of light and color. Its special structure consists of contrasting colors that give originality to the place where it is located. Autumn shades will be popular with designers / architects as this stone is easy to process and match with various materials., including wood.

General technical characteristics :

  • Apparent density: 2550 – 2728 kg/m3
  • Water absorption coefficient: 0,8 – 0.17 %
  • Abrasion coefficient: 4,32 mm
  • Dry compressive strength : 106,8 N/mm2
  • Compressive strength after 20 of freeze-thaw cycles: 102,5 N/mm2.
  • Breaking strength: 18 N/ mm2
  • MOHS hardness: 4


Through its translucent structure and thanks to its special colors and shades, onyx can be the optimal solution for creating truly unique ornamental works.


Onyx can be supplied in the form of slabs (with a thickness of 0.5 – 2 cm), in limited stocks.

Their strength is increased due to the technological procedure by which onyx blocks are injected with resin under vacuum, being then cut into reinforced slabs on the back with mesh.

Standard processing:

Polished, polished, scapitat, roughened, my son.

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