has been waiting outside misteryshop and rewarded lv 6 gem,how to get that?

[endonesa]

recently someone in worldchat i see message like this,how to get that? i wanna have one 2
here is the ss

[CondorHero]

Level 6 and 7 gems are rare.

You basically keep refreshing the mystery shop once every 4 hours, or you reset it for 45 balens.
The player who got it simply kept waiting till it appears.

It could be for weeks and months.

[Ruise]

simple:
Pure luck.

And it's not rewarded, you need to buy it with ballen