Portland stone is a limestone geological formation (formally named the Portland Stone Formation [1]) dating to the Tithonian age of the Late Jurassic that is quarried on the Isle of Portland in Dorset, England. [1]

Specializing in hardscape and structural columns, PSW offers top quality, bulk supply, including those hard to get specialty products. Supported by a fleet of trucks ready to deliver, we help retailers get what they need…when they need it.

2021年7月30日 · Portland stone is a creamy-white limestone quarried from the Isle of Portland on the Dorset coast. Though this Jurassic-aged rock started life as a seafloor sediment it now adorns the...

2025年1月27日 · We extract a full range of Portland Stone from the largest and most productive mine on Portland. There is no colour variation in the basic matrix of the stones, but the shell content and the texture of each bed will reflect the light slightly differently.

2013年10月29日 · Portland Stone (quarried on the Isle of Portland, Dorset) is a type of limestone which formed slowly over the last 150 million years or so as tiny grains of sediment grew and compacted. It is very similar to Bath Stone, but has a subtly unique texture, grain and colour.

2014年9月16日 · What is Portland Stone? Portland stone is a type of limestone, mostly calcium carbonate (CaCO 3), which is the same mineral that forms the bulk of chalk, many marbles, travertine and limescale in kettles.

Portland Stone is a limestone. We extract a full range of Portland Stone from the largest and most productive mine on Portland. There is no colour variation in the basic matrix of the stones, but the shell content and the texture of each bed will reflect the light slightly differently.

Portland limestone is a limestone which was deposited in the latest stage of the Upper Jurassic period. It was first found on the Isle of Portland, Dorset. [1] . However, it occurs over a much wider area, including France. The strata are beds of white-grey limestone separated by beds of chert.

We are the world’s largest Portland limestone supplier. Manufacturing everything from cladding to paving, providing dimension block, and bespoke finished masonry. From the Jurassic coast, our work can be seen on some of the most iconic buildings worldwide.

The Isle of Portland proffers no ordinary stone but one of Britain’s most treasured natural resources – known for both its easily recognisable and varied features, and for its contribution to the character of the nation’s capital city.