Okay. I take your point. What about my question - what are the thingies around the flaming hearts? I guess you don't know either. :)
Around the Sacred Heart of Jesus is the crown of thorns. Sometimes Mary's heart is shown with thorns too but usually it is shown pierced by a sword (or 7 swords showing her seven sorrows) as foretold by Simeon at the presentation of Jesus in the Temple.
Sorry I didn't see that question. Our Lord's heart is circled by a crown of thorns, Our Lady's heart is circled with roses, and is pierced by a sword.