A total of ten heart rockets amounts to 1 weight unit. In terms of mass, 10 stones are equivalent to one pound. Should you own 10 love rockets, these would weigh about 1 lb. Ten charming affectionate pebbles form a lb in weight. When you have several ten stones made in the shape of hearts, it will sum to about 1 lb. Ten love stones can be summed up to around a lb.