As this is become a new mini quest available for buy which is good movement to make a usage for beans and beans stalks, the problem that the 1 daily limitation does make sense at all:A new quest buff called "Shiny gemstone" is available in the Epic category within the in-game merchant.
Why? because you already getting limitations from quests, you have to wait production to finish, you need to train troops, you need to wait 25 baskets to finish, so the quest already limited.
http://settlersonlinewiki.eu/en/ques...hiny-gemstone/
I know maybe some think about power leveling but it is not, low levels can barely do 1 quest daily, I doubt about that, and only solution to boost it a little is using gems, which is something BB would like to see, and for high level people, 53K exp is really silly, so even if they do 10 daily (which is still almost impossible to do anyway, or you could do that for 1 day or 2 only), it is 530K and still almost like doing 2 woodcutter with exp boosts and prem.
so, why is this? really 1 shiny gemstone daily does not make any sense, and I don't think it would break crystals balance or even effect it, you get 6 shards daily, and you need 10 for making 1 crystal, so you getting like 4.2 crystals for the week, or 18.25 for 1 month, while your randomness of daily tasks give you more chance than this.
Maybe it will make sense if you make it like 2 hours or a few hours as a cool down time.