I need help

I left only 10 gems in comet crash site.
But I can't find it.

5 green gems and 5 aqua blue gems.
I think that i destroyed all things.
Because of this, I can't play this game.

Please help me

On the world map, when you tap or click on an island, under the title of the island tells you how many of each coloured gem you still need to find. Have you got the magnifying glass? this item when you click on it will tell you where the gems are.