Santa Maria Novella Pot Pourri Egg Diffuser. Included Size: 5.5'h x 4'd This 5.5''h x 4''d hand crafted and painted applique potpourri diffuser is an elegant way to captivate any room with the signature potpourri fragrance. The scent is diffused through circular vents designed at the top. The Santa Maria Novella emblem is a hand painted applique in blue, giving this beautiful egg an epicurean feel. Porcelain is also known to keep the potpourri moist and fresh for prolonged usage.