A total of ten love stones amounts to 1 pound. In terms of weight, 10 pebbles equal 1 lb. If you have 10 heart stones, these would measure around 1 pound. A total of ten lovely love-shaped rockets make up 1 lb in weight. When you have several ten pebbles made in the shape of hearts, they will sum to around one pound. Ten heart rockets totals to approximately a pound.