Snowflake photo: In the hall of the mountain king (1024 x 768)
This is tiny hexagonal plate snowflake, around 0,5 millimeter in diameter. Recently i especially hunting for snowflakes with rainbow colors, shooting tiny hexagonal plates like this on horizontally placed sheet of glass, pointing macro setup at angle with small desktop tripod. After one hour of trial and error, i catch some snow crystals with this effect. Here is second processed snowflake from this series: Rainbow flower.
This picture was made by averaging stack of 16 identical RAW photos for way better details and colors of such tiny object.
And here is two more rainbow snowflakes, captured previously: Ice rainbow and Ice rainbow 2.
If you are curious about effect, which produces these incredible colors in transparent ice, here is good Wikipedia article: Thin film interference.
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.