The UCLA Collection of Meteorites is one of the largest meteorite collections in the United States. The collection of meteorites began in 1934 when William Andrews Clark, Jr. donated a 357abbr=on fragment of the Canyon Diablo meteorite, now known as the Clark Iron. Over time, the collection grew to include over 2,400 samples from about 1,500 different meteorites.[1] The collection holds forty mostly complete meteorites.[2] A museum exhibiting 100 specimens from the larger collection opened to the public in 2013,[3] with a grand opening in January 2014.[1]