Scagliola

What it is

Scagliola is the beautiful sleight of hand that turns humble gypsum into the rarest marble. Pigments are worked into the plaster and drawn together by hand, so that veins, drifts and flecks of colour appear as if the stone had grown that way. Once set and polished, the surface takes on the cool depth and quiet glow of the real thing — and the eye, however keen, is gently fooled.

At its most ambitious, scagliola imitates pietra dura: intricate pictures and patterns inlaid stone by stone. Here it is all done in plaster, a mosaic of colour that never meets a chisel. Run a hand across a finished panel and there are no seams, no joins — only a single, seamless expanse of what looks unmistakably like precious stone.

Where it comes from

The craft was born in the workshops of northern Italy, where seventeenth-century artisans found they could summon the look of costly marble and inlaid stone at a fraction of the labour. It travelled with them into the great churches, palaces and stately homes of Europe, dressing altars, columns and tabletops in colour that no single quarry could ever supply. It remains, to this day, a discipline passed from master to apprentice — the same patient, secretive art of making stone from a handful of pigment and plaster.