Wild cards?

How do you use wild card gems?

Hi! Wild Gems multiply the number of gems of any color. Just include them in a 2 gem match or as the 4th gem in a 3 match and they multiply the number of gems you get credit for. Hope that helps. Enjoy the game. Bye.

Guys, who play this game on windows 8 smartphone?? cant install the game.. dont know what is the problem