Especially for people, who doubt that i photograph real snowflakes, here is small "before and after" chart. Please click at source previews to open full 12 megapixel photos (straight out of camera JPEGs):

source shot	processed picture

If you want to see more snowflakes, you can browse through all snowflake pictures.
Here you'll find snowflake photo wallpapers in numerous resolutions and screen proportions, up to Ultra HD 4K.
And here is article about snowflake macro photography.

Snowflake photo: The core (1600 x 1200)

Prints available at Artist website (mirrors at Pixels and FineArtAmerica), RedBubble.com.
Licenses for commercial use - at Shutterstock.com, 500px.com.

This medium size snowflake (3-4 millimeters from tip to tip) is one of my favorites. It is very clear and symmetrical. I like how volumetric surface distorts background behind the crystal. Big hexagonal center contains very simple, but interesting inner pattern.

8 identical RAW photos was taken as quick series and averaged to boost signal-to-noise ratio of this picture. Background: dark woolen fabric, diffused light of grey cloudy sky, external optics Helios 44M-5, January 2013, Moscow.

This photo was chosen by Autodesk to be a part of Fake or photo? challenge version 6. This is interesting and, IMHO, not so easy challenge. My result is only 67%. If you would like to try it, you already know one right answer. :)

Also, i used precise mask for this version with blurred background:

Snowflake photo: The core, blurred version (1200 x 1200)

Prints available at Artist website (mirrors at Pixels and FineArtAmerica), RedBubble.com.
Licenses for commercial use - at Shutterstock.com, 500px.com.

This snowflake available as ultra HD wallpaper:

Next winter i captured similar snow crystal: Icy jewel, with slightly bigger size and more complex patterns:

If you want to see more snowflakes, you can browse through all snowflake pictures.
And here is article about snowflake macro photography.

Snowflake photo: Starlight (2048 x 1536)

Prints available at Artist website (mirrors at Pixels and FineArtAmerica), RedBubble.com.
Licenses for commercial use - at Shutterstock.com, 500px.com.

This is one of most beautiful stellar dendrite snowflakes i've captured past winter, but it was hard to process, because i got serious problems with aligning shots (wind shifts and rotates this crystal when i've took photo series). This snow crystal is quite large, about 5-6 millimeters from tip to tip. I like this crystal's elegant and ornate "design" and shape, especially high detailed arms: they remind me six sharp swords, pointing inward.

8 identical RAW shots, captured as fast series, was averaged to boost signal-to-noise ratio of final picture. Background: dark woolen fabric, natural light (grey cloudy sky), camera Canon Powershot A650is, external optics Helios 44M-5, January 2013, Moscow, Russia.

Another variant with blurred background:

Snowflake photo: Starlight II (2048 x 1536)

Prints available at Artist website (mirrors at Pixels and FineArtAmerica), RedBubble.com.
Licenses for commercial use - at Shutterstock.com, 500px.com.

Also, Starlight available as Ultra HD wallpaper:

Starlight was chosen as cover for music disk Unicum by Draugh, composer from Chile:

I also combined this snow crystal with snowflake Rigel into one picture:

Snowflake photo: When winters meets 2 (3400 x 2550)

Prints available at Artist website (mirrors at Pixels and FineArtAmerica), RedBubble.com, Society6.com.
Licenses for commercial use - at Shutterstock.com, 500px.com.

And here is another beautiful cluster with two stellar dendrite snowflakes, taken in January 2014, also at dark textured backdrop, and processed in same technique:

If you want to see more snowflakes, you can browse through all snowflake pictures.
And here is article about snowflake macro photography.