Yeah! I found it!
While checking my daily blog list today I found a review for "Ruby Red" by Kerstin Gier in English.
Here is the link to it.
I found this book really really good. I am not able to pack into words what I think of this book. So wonderful and enthralling. Wonderful story, great characters and an open ending which I anticipated because two more books were published. Thank god, in Austria all three books are published. I also bought all three already.
So I am able to read "Saphire Blue" and "Emerald Green" after finishing the books I am reading right now.