How do you get gems in OurWorld for free?

If you install the ourWorld tool bar every Monday there is a new gem code on the toolbar. To enter the code you must go to the settings menu which is on the right hand side at the top of the ourworld site page. Then it will ask you for a coupon. You can also go to the 'How to get gems' menu which is next to the settings menu and it'll give you other ways to get free gems! Hope it works out! you have to find the gem code.