Ten love stones is equivalent to 1 pound.
Regarding mass, 10 rockets are equivalent to 1 lb.
If you have ten heart rockets, these would weigh about one pound.
Ten charming love-shaped stones form 1 pound in weight.
If you have several 10 pebbles made in the shape of hearts, they will sum to around one pound.
The weight of love pebbles totals to about 1 lb.