More!!! Credit to soupery on tumblr! I have Bloodstone, Blue Peruvian Opal, and Cats Eye Apatite!
The golden ratio should not need any introduction to those who have studied math…
Material Studies, servando lupini on ArtStation at https://www.artstation.com/artwork/material-studies-968d291e-2e41-4655-86a4-7bbeb437c811
LANDSCAPES - Graphite Pencil Drawings by Diane Wright
기초디자인 - Google 검색
Histoire naturelle des poissons (1828) - Georges Cuvier