Credaro stone is one of the most typical building stones used over the centuries in the Bergamo area. Geological classification defines it as a sandstone with a limestone composition and it comes in 2 varieties: Medolo and Berrettino.

Formed almost entirely by micro-crystalline calcium carbonate (crystalline limestone), very fine grain size.
The rock is very homogeneous, hazel-gray with tones from light to dark.

Formed mostly by small detrital carbonate granules (calcarenite), with evident levels of stratification.
Its grain size is medium-fine, its color is yellow-brown or pink, warmer than the Medolo.

The quarried material is classified as a unit of the Pietra di Credaro, which forms the easternmost portion of the formation of Bergamo’s Flysch.
These deposits are from the Cretaceous era (about 65-70 million years ago). In the late Cretaceous, the Southern Alps raised, causing landslides in the deep sea with debris produced by erosion (turbidites). These, sedimented, now form the Credaro Stone.

examples of use
operational realities