bluestone

American  

[bloo-stohn] / ˈbluˌstoʊn /

noun

1. a bluish, argillaceous sandstone used for building purposes, flagging, etc.

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bluestone British  

/ ˈbluːˌstəʊn /

noun

1. a blue-grey sandstone containing much clay, used for building and paving

2. the blue crystalline form of copper sulphate

3. a blue variety of basalt found in Australia and used as a building stone

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Etymology

Origin of bluestone

First recorded in 1645–55; blue + stone

Example Sentences

Certainly, no prying eyes could see through to the pool area, which is bordered by a bluestone patio.

From MarketWatch • Apr. 8, 2026

The largest "bluestone" at the heart of Stonehenge may not be from Wales, according to new research.

From BBC • Oct. 17, 2023

Popular types for hardscape features include slate, granite, limestone, sandstone and bluestone.

From Seattle Times • Jun. 16, 2023

The exterior is covered in bluestone and cedar and nothing else.

From New York Times • Nov. 2, 2022

The campus looked a lot like the Institute, with its rolling hills, redbrick Victorian buildings, and bluestone roofs.

From "Reaching for the Moon" by Katherine Johnson