Chemical Analysis

LAVA pumice stone's typical chemical composition is:

Silicon dioxide SiO2 71.91%
Aluminium oxide Al2O3 12.66%
Ferric oxide Fe2O3 1.13%
Calcium Oxide CaO 1.46%
Magnesium Oxide MgO 0.32%
Sulphur Trioxide SO3 0.03%
Potassium Oxide K2O   4.30%
Sodium Oxide Νa2O 3.45%
Calcification Loss   4.53%
Indefinable content 0.21%

LAVA markets the following products depending on the pumice stone's grain size:

Grain size Brand
0-3mm Special Besser
0-8mm Besser
2-10mm Rice
0-16mm German
16-40mm Stone Wash

LAVA SA's extraction technology and quality control, coupled with our sufficiency in excellent-quality reserves, allow us to safeguard the high quality of the products offered.


Special Besser 0-3mm Besser
Stone Wash 16-40mm

The products' photos were taken from a distance of 1,5 m.

The House ABCD+

The ABCD+ House, designed by French builder Cecile Robin and using Lafarge materials, was inaugurated in 2012 in Roanne (France).

This positive-energy detached concrete house, the result of a close partnership with building firm Cecile Robin Construction, is inspired by the PRO-eco initiative set up by Lafarge in France to make sustainable construction simpler for building professionals.

Combining traditional techniques and innovative materials such as pumice-stone concrete block, the house meets the requirements of 2020 Thermal Regulation as of today. It also offers an urban, architectural and environmental answer to the new challenges of the sustainable city. The house was awarded the golden medal in the "Urban Challenge" category for the House of the Year 2012 classification by French Houses Union.

Follow our guided tour around this new concept for detached aesthetic and affordable positive energy house made from concrete.

Watch the video>>