Are you a rock hound? Do you love gemstones? Do you know your crystals from your quartz? Then this game is for you. With over 100 gemstones, we're sure there are a few you don't know.

The game is simple: start with a picture of a gemstone and 4 possible answers. Select the correct answer and you get points. Guess wrong and you're given another chance but for less points.

There are two gameplay modes: a timed 60 second game or an un-timed 20 questions format. Your choice which you play - both are fun for rock hounds and gemstone hunters of all ages.

Thank you for playing. Please email support@stevensonsoftware.com if you have any questions.