Melting snowflake from previous shooting session. This one was medium sized, and after cropping i got 1752 x 1314 resolution. Glass background with backlight, additional lens Helios 44M-5, november 2012, Moscow.
This photo was chosen by M-Opus, Irish progressive rock band, as cover for album «1975 Triptych»:
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.