Milford pink granite

[2] From 1870 to 1940, the town of Milford became famous for the "pink" variety of this stone, prized as a building material.

According to local legend, the granite was "discovered" in the early 1870s by two brothers, James and William Sherman at Rocky Woods in Milford.

[3] At its peak, over 1,000 men labored in dozens of quarries in Milford and nearby Hopkinton.

A sample of Milford Pink is on display at the Smithsonian Institution.

[5] The granite is described as a light gray or light pinkish-gray to a medium, slightly pinkish or pinkish and greenish-gray biotite granite with spots from 0.2 to 0.5 inches (5.1 to 12.7 mm) across and in some cases tapering out to 1 inch (25 mm) in length.

A block of granite in 2017 from the Fletcher Granite Company.
American Museum of Natural History, New York (1869)
Flour and Grain Exchange Building, Boston (1892)
Boston Public Library under construction, 1889