@NatalyaOba I think it looks good!! They are occupying themselves in a harmless activity that will wash away the next time it rains. In my town they had a competition for whoever could color their sidewalks for Fourth of July and GAVE the chalk to do it with!
@saniyafatma1278 I would leave in the OG setting.
IF you can’t do that replace it with a moissanite stone and have the heirloom stone set the way you want it.