Blue Onyx is the rarest read in the onyx family — a cool body of glacial blue and slate gray laced with white and translucent veining, a world away from the warm honeys and reds most people picture. The color comes from the mineral content of the groundwater that formed it, and no two slabs carry the same drift.

Polished at 2cm, the surface deepens the blue and lifts the veining to a soft glow under light. Backlit, the translucent passages turn luminous — which is exactly where this stone wants to live: a feature wall, a bar front, a powder room, or a single hero panel where the cool palette can do the talking.

Onyx is softer than marble and belongs on vertical and light-use horizontal surfaces. On the floor in Los Angeles now — bring a flashlight, or ask us to light it from behind in the yard to read the full depth.