Quartz (Engineered Stone Countertop)

Physical Properties

Hardness: 7 Mohs scale; Color: White with fine salt-and-pepper particulates; Luster: Vitreous to greasy; Structure: Non-porous slab; Specific Gravity: Approx 2.65

Formation & Geological History

Man-made industrial process where ground-up natural quartz (approx 90-95%) is mixed with polyester resins and pigments, then pressed under vacuum into solid slabs.

Uses & Applications

Primary use is in residential and commercial construction specifically for kitchen countertops, bathroom vanities, and floor tiles due to its durability and stain resistance.

Geological Facts

Unlike natural granite or marble, engineered quartz is non-porous and never needs to be sealed. It is one of the most popular surfacing materials in modern interior design.

Field Identification & Locations

Identify in the field by its uniform pattern, lack of natural fissures, and cool-to-the-touch feel typical of silica-based materials. Found in high-end modern kitchens.

Identified on: 4/26/2026

Mode: Standard