Every snow crystal has a six-sided (hexagonal) shape, otherwise they're all different.

This activity lets you grow your own.

Visit the Frosted Flakes snow crystal study from Charleston IL

This applet is Copyright © 2011 by the American Meteorological Society.
This applet was developed by Ira Geer (AMS), Robert Weinbeck (AMS), and Tom Whittaker (University of Wisconsin-Madison).