Petreax app for iPhone and iPad

To get to a diamond, and then collect a large number of diamonds as much as possible.

The progress of the game:
Different forms of complexity squares of different colors fall from above.
You need to adjust them in such a way that will gather together 3 or more same colored squares.
When there is a group of squares greater than or equal to 3, they gather in to the square of their lower right corner, and it changes to the next color, according to the list on the right screen.
Purple color changes to silver coins, silver coins to gold,
And gold coins changes to a diamond.
The game breezy, fun and addictive on the one hand, and requires thinking in advanced stages.

how many diamonds can you achieve?