The three primary materials used in making the Washington Monument are bluestone gneiss, granite, and marble. The monument's cap is made of aluminum.
Aluminum
The Washington Monument is made of Marble, Granite, and Bluestone gneiss.
aluminum
Aluminum
The Washington Monument is topped with an aluminum apex. The apex sits atop a marble pyramid.
Aluminum. It was just on who wants to be a millionaire
The top of the Washington Monument is capped with an Aluminum Pyrimidion. The monument was finally completed, with the 100 ounce (2.85 kg) aluminum tip being put in place on December 6, 1884. It was the largest single piece of aluminum cast at the time. In 1884 aluminum was as expensive as silver, both $1 per ounce.
The peak of the Washington Monument is made of aluminum. It was chosen aesthetically for its color and non-staining qualities and practically as a lightning rod.
No, the top of the Washington Monument is capped with a pyramidal point or pyramidion. The pyramidal point was cast by William Frishmuth from aluminum, at the time a rare metal as valuable as silver.
Washington monument
The three main materials used in the Washington Monument were bluestone gneiss, granite, and marble. Aluminum was used in the capstone.