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Ten heart stones is equivalent to 1 weight unit.
In terms of mass, a total of ten rockets are equivalent to 1 pound.
In case you possess 10 affection pebbles, they'd weigh about 1 lb.
A total of ten beautiful heart-shaped pebbles compose a lb in weight.
If you have several ten stones made in the shape of hearts, it will amount to about 1 pound.
10 affection pebbles can be summed up to around a lb.