Delightful. Fascinating. These delicate pieces of art are worth taking your time to examine and admire. Within them I find the signature of a loving and artful Creator.
We would be foolish to believe them to be simple.
The following is from Physics World: 
The beautiful snowflake is much more than an attractive seasonal occurrence. In fact, understanding how a snowflake grows is a complex problem of molecular dynamics, writes Kenneth Libbrecht, Professor of Physics at the California Institute of Technology, in January’s Physics World.
Everyone knows that no two snowflakes are identical to one another. That's because they all start out as a simple hexagonal prism - the most basic form of snow crystal - but then encounter a range of atmospheric conditions as they journey down to Earth.
The conditions in the atmosphere dictate how water molecules are transported to the crystal but, because of the wide range of conditions, that makes it hard to simulate snowflake growth and explain how particular structures are formed.
Kenneth Libbrecht has said, “Beyond the intrinsic scientific questions, beyond the practical applications of crystal growth, and beyond the meteorological significance of atmospheric ice, we who ponder snowflakes are motivated by a simple and essential desire to comprehend the natural world around us.”
"How full of the creative genius is the air in which these are generated! I should hardly admire more if real stars fell and lodged on my coat."
--Henry David Thoreau
Here, in case you may not own scisorrs and paper: http://snowflakes.barkleyus.com/
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