Cambrian Black Antique – Comptoir en Granit du Québec | Union Stone

Cambrian Black is a natural granite extracted from Polycor's quarries in Quebec. Its deep black background, streaked with silver-grey crystals and bluish reflections, makes it one of the rare northern granites that combines strong visual character with real performance in Quebec's climate. No artificial primers: each slab is unique, stable, and designed to last decades without aesthetic compromise.

Where does Cambrian Black's aesthetic come from?

Cambrian Black is extracted from the Canadian Shield, one of the oldest geological formations on the planet. Its dense black color comes from a high concentration of biotite and hornblende, two minerals that give it both its depth and its exceptional hardness. The antique finish reveals feldspar crystals that capture light without glare: a rare balance between visual richness and discretion.

Why choose Cambrian Black over imported granite or black quartz?

Traceable and local origin — extracted in Quebec by Polycor, Cambrian Black offers a significantly reduced carbon footprint compared to granites imported from India or Brazil, with provenance documentation available upon request.

Superior natural hardness — with a Mohs hardness rating of 6 to 7, it resists everyday scratches without additional chemical treatment. Unlike black quartz, it withstands hot pots without risk of discoloration under intense heat points.

Living character — no two slabs are identical. Where black quartz standardizes, Cambrian Black personalizes: ideal for projects that want to break free from predictable results.

Technical specifications

Union Stone support: from quarry to installation

From finish selection to complete installation — templating, local cutting, professional installation — you don't have to coordinate multiple parties. Contact us for a no-obligation consultation.