Grassi Pietre – The Italian trademark for Vicenza Stone

Grassi Pietre started working in Nanto (Vicenza – Italy) in 1850. Since then Grassi Pietre is also synonymous of Vicenza stone, extracted from Colli Berici in the family owned quarries.

Today, Grassi Pietre continues facing the new global market challenges with care and passion, combining its artisanal know-how together with the most modern technologies available for the stone processing and production.

A team of skilled personnel manages the project in every aspect from material consultancy and selection, to tendering, project development and production, logistics and installation with the aim to achieve the highest level of customer service and satisfaction.

Company own quarries

Company owned quarries Situated on the Berici Hills and owned by the Grassi family since 1980, the Quarries represent the company’s strenght. They allow to maintain a constant supervision and thorough knowledge…

Historical Architecture


Fifty million years ago, the area of the Berici Hills was entirely submerged by water.
In this marine environment the Pietra Berica became a limestone of dual formation, clastic and biogenic, since it results both from the deposition of material transported from rivers to the sea, and from the sedimentation of skeletons of aquatic organisms as foraminifera and bivalves.

In those warm seas countless species of fish and clams lived, while the seabed was rich in corals and seaweeds.
The stone of the Berici Hills is also called soft stone, due to its easy workability and is classified into two distinct groups: the first one is called Pietra di Nanto and includes: the Nanto, the S. Germano, the Giallo Dorato, the Grigio Argento stone.
All these stones from the eocene, are dated to fifty-five million years ago and characterized by a straw-yellow or gray color, due to the presence of iron oxides in their chemical composition.

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