Since the gem collapse doesn't work anymore, this will work for now.
Fun game, but.... The game is fun but reacts slowly on Gallexy Tab 3. I am uninstalling, though, because of obnixious and inappropriate ads that trick one into clicking. Would rather twiddle my thumbs than be tricked into click-throughs.
My kid like this app
Gems Crush Mania is a match 3 game which is easy to start but difficult to drop.
Battle Gems is the most epic, over-the-top, gem battle puzzle game... with puns.