Cipollino Marble

Cipollino marble is a calcite marble distinguished by undulating green bands of mica (muscovite or chlorite) alternating with white to greyish carbonate. The name comes from the Italian cipolla, "onion," because the layering recalls the concentric rings of a cut onion.

The most celebrated variety is Cipollino Verde from the island of Euboea (Carystos) in Greece, quarried since antiquity and shipped across the Roman Empire for columns and revetment. Roman architects valued its dramatic veining for large polished surfaces.

Its wavy, foliated banding records the deformation the rock underwent during metamorphism, making each slab a snapshot of folding and flow within the crust.

Cipollino forms by regional metamorphism of an impure limestone that contained interlayered clay and silt. Heat and directed pressure recrystallize the carbonate into interlocking calcite while the clay minerals transform into green mica (muscovite, sometimes chlorite or actinolite), which aligns into thin foliated layers.

Continued ductile deformation folds these mica layers into the characteristic wavy, contorted bands. The contrast between recrystallized white calcite and the green silicate seams produces the onion-ring pattern.

The historic source is the Carystos region of Euboea, Greece; similar cipollino-type marbles occur in the Alps and other orogenic belts where micaceous limestones were metamorphosed.

Identify cipollino by its wavy, sub-parallel green bands set in a white-to-grey carbonate matrix, with a soft scratchable hardness (Mohs 3-4) and effervescence in dilute acid where calcite dominates. The green layers are micaceous and may impart a faint sheen or schistose feel.

Streak is white and luster is dull to sugary on broken surfaces, glassy when polished. Distinguish it from serpentinite (harder green, no fizz, waxy luster) and from verde antique (a serpentinite breccia). Onyx marble and other banded calcites lack the green mica seams.

Cipollino has been a premier architectural and decorative stone for over two millennia. The Romans used Carystian cipollino for monolithic columns, wall cladding, and flooring in temples, baths, and basilicas; surviving columns appear in many ancient monuments.

Today it is used for ornamental cladding, countertops, table tops, and restoration work, prized for its flowing green-and-white figure. Because it is soft, it suits low-wear interior surfaces better than floors with heavy traffic.

It has little industrial use beyond dimension stone and is mainly valued for aesthetics and historical significance.