The The Lockkeeper’s House is made of Potomac bluestone. Photo by Elvert Barnes.

A group of civically-minded elementary school students will make the case Friday for the Potomac bluestone to become the official rock of D.C.

In a public roundtable on the “DC Rocks, So We Need One Act of 2014,” children from Eaton Elementary School will testify on the bill they drafted with the Committee on Education. The idea, according to the Post, came from nine-year-old Peter Herrick, who said, “It just seems cool that we could have a rock that we could admire. We already have a tree and a flower.”

If you like arguing against children, too bad! Only oral testimony from students will be heard, while written statements can be made part of the official record. Even if you could argue with the kids, the Potomac bluestone seems like a rock solid (pause for laughter) choice. Stone from the Sykesville Formation was used in many early D.C. buildings, including the White House, Capitol, St. Elizabeths Hospital and the Panda and Elephant houses at the National Zoo.