You are all familiar with that annoying "Player is under attack” message during gem retrieving, don’t you? Well, soon you won’t see it that often.
After the nearest update it will be possible to retrieve different gems at the same time.
For example, an evil experienced thief has stolen your perfect 999999 golden gem. He also took several deep silver gems from other victims. It means that if somebody tries to retrieve the golden gem for you, no one will be able to get silver gems back for other poor fellows. In the future, if somebody tries to retrieve a jewel, others will join the line only if they want to get that same precious back.
Is that good?