"A heart (filled with) serenity" is an English equivalent of the Italian phrase un cuore di serenità. The phrase also translates literally as "one heart of serenity" in English. The pronunciation will be "oon KWO-rey dee sey-REY-nee-TA" in Pisan Italian.
Cuore
"Silver heart" in English is cuore d'argento or, more poetically, cuore argenteo in Italian.
Scelto con il cuore in Italian means "chosen by the heart" in English.
Segui il tuo cuore in Italian means "Follow your heart" in English.
grande cuore
cuore blu
L'amica del mio cuore in Italian means "the (girl) friend of my heart" in English.
"Heart of the family" in English is cuore della famigliain Italian.
Il cuore di Maria
"Forever in your heart!" in English is Per sempre nel tuo cuore! in Italian.
Con un peso sul cuore.
"Did you leave your heart in Rome?" in English is Lasciasti il tuo cuore a Roma? in Italian.