Italian heraldic dictionary
Corona
only as main figure and not placed to crown another figure. It can be "closed" (circle surmounted by arched diadems), "comital" (gemmed circle, raised with nine visible pearls), "fioronata" (gemmed circle, with raised in the shape of flowers), "noble" (raised circle from five visible pearls), "radiata" or "old-fashioned" (ending with points or rays, without flowers or pearls). You can also find c. laurel, oak, thorns, accompanied by palm leaves, and rosary crowns.