Six-petal rosette

The six-petal rosette is a design with six-fold dihedral symmetry composed from six "vesica piscis" lenses arranged radially around a central point, often shown enclosed in a circumference of another six lenses.
The design is found as a rosette ornament in artwork dating back to at least the Late Bronze Age.
Construction.
The pattern figure can be drawn by pen and compass, by creating seven interlinking circles of the same diameter touching the previous circle's center. The second circle is centered at any point on the first circle. All following circles are centered on the intersection of two other circles.
The expansion of the design into a regular overlapping circles grid is also known as "Flower of Life". Bartfeld (2005) describes the construction: "This design consists of circles having a 1-[inch] radius, with each point of intersection serving as a new center. The design can be expanded "ad infinitum" depending upon the number of times the odd-numbered points are marked off."
History and folk art.
The design is attested from at least the beginning of the Late Bronze Age, represented, for example, on ornamental golden disks found in Shaft Grave III at Mycenae (16th century BC).
It is also found in some Cantabrian stelae, dated to the Iron Age. In ancient art, the ornament occurs alongside other patterns, such as eight-petal rosettes as well as arrangements of swirls or spirals, and the attribution of any kind of significance to its occurrence is purely speculative. Peralta Labrador (1989) cites a proposal according to which the design in the La Tène (Celtic) period was a solar symbol associated with the god Taranis.
The six-petal rosette is common in the early modern (17th to 18th century) folk art of the Alpine region, in the Pyrenees (Cantabria, Navarre, Aragon), and parts of Eastern Europe.
In Portugal, it is common to find it in medieval churches and cathedrals, as the engraved signature of a mason; but also as decoration and symbol of protection on the chimneys of old houses in Alentejo (at times together with the lauburu, or with Solomon's pentagram).
The design is also known as "Sun of the Alps" ("Sole delle Alpi") in Italy from its widespread use in alpine folk art. It resembles a pattern often found in that area on buildings. It is used in the coat of arms of Lecco Province. It has also been used as the emblem of Padanian nationalism in northern Italy since the 1990s. In 2001, "Editoriale Nord", the publishing company of "La Padania", registered the green-on-white design as a trademark.