Cleveland Museum of Art 137332 landscape Niccolò di Segna (Italian) c. 1340 CC0 cma sacred-art portraits objects-with-gravity sacred art objects with gravity angels renaissance painting portrait italian art gold religious medieval halo red brown muted colors framing historical devotion graceful serene pinnacle angel pair Niccolò di Segna (Italian) c. 1340 Italy, Siena tempera and gold on wood panel Painting European Religious Sacred & Devotional Faces in Time Objects with Gravity