3 sizes on one sheet 2 1/2″, 3″ and 4″ high by 1/4″ thick About this mold I was tired of trying to find Flaming Heart Milagro chocolate molds, so we just made them. This mold has 3 extremely detailed antique milagro heart designs. Our friend Carolyn took almost a month to carve these exquisite milagros – a classic Mexican icon. These flaming heart designs were inspired by vintage milagro charms. These particular designs came from Mexican milagros from the 1800s. These are not Day of the Dead specific – you can use this mold year round.