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Quartz Quality Certificates

Silestone is internationally certified to ensure maximum safety and protection. Such certificates offer consumers the assurance that Silestone is a safe, top-quality material. Our certificates offer a 100% guarantee.

GREENGUARD Certificate

This certificate proves that Silestone does not generate any substance that is harmful to the environment. It also guarantees the use recommended for our surfaces in closed areas.

Silestone has also been awarded the “Greenguard Children & Schools Certificate”, which confirms maximum safety in its applications for schools and universities.

LGA Certificate

LGA QUALITEST GMBH is an independent organisation that certifies the safety, good condition and quality of everyday products, in accordance with European and international requirements. Cosentino has obtained the “Hygiene Tested Certificate” from LGA for its Silestone worktops.

This certificate is only awarded to products in which special attention is paid to hygiene during their development and which meet all microbiological regulations.

NSF Certificate

Thanks to the NSF CERTIFICATE, Silestone is deemed to be a safe material for direct contact with all types of food.

Such a widely-esteemed certificate is endorsed by such prestigious bodies as the FDA or WHO (World Health Organisation).

ISO 14001 Certificate

Cosentino’s Environmental Management System Certification. This standard certifies the excellent performance and constant environmental improvement of Cosentino's production processes.

It highlights efficient use of raw materials, control of emissions into the atmosphere, waste management programmes, treatment systems and re-use of industrial water, disposal of chemical substances, and control of environmental hazards.