It is from the Winter 2010 Feel collection.
Pictures are 3 coats with Seche Vite topcoat. I suggest 2 coats to be fully opaque.
This is currently available polish from Zoya.
Kristen by Zoya can be best described as a gull gray nail polish with a mild bluish hue. An ideal cool neutral color that covers fully opaque in 2 coats.
Color Family - Blue
Finish - Cream
Intensity - 5 ( 1 = Sheer - 5 = Opaque )
Tone - Cool, Neutral