'Ash fell from sky as red sun rises'
Such vivid description are the magic of the fantasy genre. The genre which takes you from your comfortable chair and yank you into the new, unknown, magical world.
And the main factor of the this process is the Magic System of that specific world.
One of such novel series is Mistborn by Brandon Sanderson. It has a very specific magic system that revolves around the Metal and all different power comes from different metals.
These are some symbols of metals that are used in the magical system but with a flair of myself in it.
Pewter Tin
Bronze Copper
Steel Iron
Brass Zinc