I already posted this interesting tiny crystal almost a year ago, and this is re-processed version with slightly better contrast and colors:
Prints available at Pixels.com / FineArtAmerica.com, RedBubble.com.
This variant have bigger cropping, and may be it’s better for design purposes:
More snowflakes in album Snowflakes and snow crystals.
Also i wrote article about snowflake macro photography.