How would it benefit the server: This will benefits the server because when you buy a booster pack the system will give you 10k gem but if my suggestion work it will turn to 10k shiny gem and so people will buy it when there is event.
Potential Issues/Exploits: Players will try to scam the other players saying that the gem are shiny gem so it will be easy money for the scamers.
Additional notes: So this is how it work, there is 3 type of shiny gem, dull gem and gem so when there is event you can choose which type of gem you want to use (The shiny gem will have the higher chance to get case and jackpot instead of cash) (The dull gem will have the highest chance to get 50k cash or whatever cash and have the lowest chance to get cases and jackpot) (The gem will stay the same state).
Thank You for reading I have been thinking this for 2months++