Airport Boulder, at Martha Lake Airport Park in Martha Lake, said to be “one of the largest glacial erratic boulders in urban King, Snohomish, and Pierce counties”, is approximately 20 feet (6.1 m) long on its longest axis and about twice a man’s height.
Garnet (Wikipedia) Garnets ( /ˈɡɑːrnɪt/) are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.