Like a fingerprint, patterns in wood grain are unique to the type of tree and the way in grows in its environment. With over 60,000 different tree species on our planet, there are a lot of variations.
“Follow the grain in your own wood.” — Howard Thurman
Similarly, in a way, the ice crystals of frost create unique patterns based on fractal process development and the variations in the surfaces on which they form.
“Frost is the greatest artist in our clime – he paints in Nature and describes in rime.” — Thomas Hood
This Unique Challenge is brought to Lens-Artists by Amy (click HERE for her post with some wonderful examples of the unique in Nature).
(and in case you didn’t see it, here’s one I posted on Wednesday that I really like…)
scillagrace 
A very interesting choice this week Priscilla. I just loved the third image with that perfect set of leaves bordered in frost. Terrific.
Thanks, Tina!
WOW. Great great selections. Well done.
Thanks, John!
Awesome photos of frost. Fascinating!
Thanks, Sofia!
Unique idea to showcase frost in your photos. Beautiful photos!
Thanks, Egidio!
Fantastic, Priscilla. Frosty crystals! Unique to the challenge and as photos. I loved the oak leaves and the final photo. Such a creative idea.
Thanks, Donna!
Beautiful frosty captures Priscilla!
Thanks, Anne!
Yes, frost is indeed unique – and beautifully caught by you!
Thanks, Ann-Christine!