The level of the lost gem is related to the progress of the plot. There are more advanced gems behind, and topaz will appear in the second act. However, at that time, it was sometimes better to have more topaz directly, so you could pay more attention to combo, or you could definitely play a lot of tricks in that garden, and sometimes you could directly produce swords and things like that. It is best not to use modifiers, which will ruin the fun of the game.