Ten heart stones amounts to a pound.
When it comes to mass, ten rockets equal one pound.
In case you possess ten heart pebbles, they'd measure approximately 1 pound.
A total of ten lovely love-shaped rockets make up 1 lb in weight.
When you have several 10 rockets made in the shape of hearts, it will amount to approximately one pound.
10 heart stones can be summed up to approximately a lb.