Where can I buy the gems of Obi Island Dream Star Palace?

I checked many websites. Some of them are more reliable, 1, wearing a suit with 12 constellation, or having a badge with 12 constellation, because I am also in which room. Look carefully at how many signs there are. 2. It is also my most reliable thing to update furniture supplies or produce twelve constellations of gems next week. Don't listen to other people's nonsense I can't be a ruby for 27 months