mineral-based composite
Engineered Quartz
Synthetic Quartz Aggregate (SiO2 with resin binder)
Hardness: 7 (Mohs scale); Color: Light grey with darker veining; Luster: Matte to polished; Structure: Non-porous slab; Cleavage: None (fractures); Specific Gravity: ~2.65
- Hardness
- 7 (Mohs scale)
- Color
- Light grey with darker veining
- Luster
- Matte to polished
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Physical properties
Hardness: 7 (Mohs scale); Color: Light grey with darker veining; Luster: Matte to polished; Structure: Non-porous slab; Cleavage: None (fractures); Specific Gravity: ~2.65
Formation & geological history
Man-made industrial process combining approximately 90-94 percent crushed natural quartz with 6-10 percent polyester resins and pigments. It mimics natural stone like marble or granite but is contemporary in origin.
Uses & applications
Extensively used in residential and commercial construction for countertops, backsplashes, flooring, and wall cladding due to its durability and stain resistance.
Geological facts
Unlike natural stone, engineered quartz is non-porous and never requires sealing. It was first developed by the Italian company Breton S.p.A. in the 1960s using the 'Bretonstone' process.
Field identification & locations
Identify by its extreme uniformity, lack of natural pits or fissures, and a 'repeat' in patterns if looking at large slabs. Commonly found in modern kitchen showrooms rather than geological sites.
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