Medium size snowflake, 3 or 4 millimeters in diameter. 8 shots averaged to boost signal-to-noise ratio. Glass background with back light, additional lens Helios 44M-5, january 2013, Moscow. Looks better in original resolution: 1725 x 1294 pixels.
Prints available at Artist website (mirrors at Pixels and FineArtAmerica).
Licenses for commercial use - at Shutterstock.com, Marketplace.500px.com.
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.