/roʊˈzɛt/

Rosette

noun · sacred geometry

What it is

A rosette is drawn with a single compass setting. Mark a centre, swing a circle, then step the same radius around that circle six times; each new arc cuts the first into a curved petal, and six petals close into a flower. Because the radius never changes, every petal is identical and the figure has perfect rotational order. The same procedure with a different step count yields rosettes of five, eight, or twelve petals.

The figure sits between the pure circle and the polygon: it is curved like the one and counted like the other. In ornament a rosette is rarely left bare — its petals are filled, outlined, or interlaced — but the underlying compass construction is always the same equal-radius rose. It is the simplest figure that demonstrates how circles of one size generate floral symmetry.

Etymology

The word is the French diminutive of rose — a "little rose" — and entered English in the early eighteenth century for any rose-shaped ornament in architecture and decorative art. The geometric construction is far older: the six-petal rose was incised on Roman, Coptic, and early medieval stonework, and the so-called daisy wheel was scratched on European buildings for centuries as a maker's mark and apotropaic sign.

Examples in use

The six petals at the heart of the Seed of Life are a rosette; the figure is the visible bloom that the seven generating circles produce. Jules Bourgoin's Arabic Geometrical Pattern and Design catalogues dozens of rosettes as the starting nodes from which Islamic star patterns expand.

Keith Critchlow, in Islamic Patterns, treats the rosette as the germ cell of the tradition — the small rose is sub-divided and repeated until it fills a wall. Gothic masons set rosettes into tracery and screen-work for the same reason: one compass setting, perfect symmetry.