The quiet science of natural stone
Onyxium is a reader's guide to natural stone — onyx, marble, travertine and the rest — covering how each one forms, where it belongs and how to keep it looking right for decades.
Stone is the one material in a house that will outlast everyone who chose it, which is exactly why so many people get it wrong. A slab is picked in a warehouse under bright light, in a hurry, from a sample the size of a postcard — and then lived with for thirty years. These pages exist to slow that decision down.
Stones
Onyx, marble, quartzite — what each is and where it comes from.
Care
Sealing, cleaning and the mistakes that etch a surface.
Design
Using stone so it reads as calm, not busy.
Sourcing
Reading a slab before it becomes a countertop.