In common law, if the store got the 珠宝 without knowing that it's stolen from someone. Then, the store is an "innocent" party. The original owner may need to reimburse full/part of the purchasing costs to the store. However, if the store knows that the 珠宝 was stolen, then it's won't get anything.
Besides, HK people don't 在英语面前点头哈腰, many of them even look down upon Yang2 Gui3 Zi1 because they think some Yang2 Gui3 Zi1 are trash. This is what I learn from many HK friends.