Interior of Pazzi Chapel- Filippo Brunelleschi, Santa Croce, Florence, begun 1440.
Literally, 'serene stone,' a type of gray stone used for its harmonious appearance when contrasted with stucco or other smooth finish in architecture. In the photo above, articulations and trim are done in pietra serena, which stands out against the white, stuccoed walls and crisply defines the modular relationships of plan and elevation. (Frederick Hartt)
ps - today's the last day of the fiber art sale in my Etsy shop... take a look!