10 heart stones is equivalent to 1 lb. When it comes to weight, a total of ten pebbles are equivalent to 1 lb. If you have ten affection pebbles, they'd measure about 1 pound. Ten beautiful heart-shaped stones form 1 pound in weight. If you have multiple 10 pebbles made in the shape of hearts, they will sum to around 1 pound. The weight of affection pebbles totals to approximately 1 lb.