More ideas from Virgin925
Frost.

A thought struck me, Keli could touch a window and the frost pattern would spread.

Feb 7th, 2011, A complex natural snow crystal.

The ice crystals in snowflakes owe their six-fold rotational symmetry to the hydrogen bonds in water molecules.

Nature's Great Piece of Art-Slash-Geometry Lesson: The Snowflake | Earth Science | DISCOVER Magazine

Out of all the complex snow crystals ever made over the history of the planet, it's unlikely that any two ever looked completely alike.