This is a beautiful taupe brown with the tiniest, most luminous, micro-sparkles. It gives a beautiful glow without looking sparkly or over the taupe (LOL I had to leave that typo there! It should read top!). I had a hard time catching it's beauty in the swatch for some reason, but take my word for it...this colour is a stunner! Maybe I'll try to do a FOTD post with it later this coming week. It is richly pigmented and very smooth. If this is any indication of the quality of the other Guerlain singles then I think I may have to investigate more. This shade was released in the spring of 2010 and is part of the regular line, retailing at $36 US. At 3.6 g this is a pretty generous sized eyeshadow so that helps ease the hit of the price a little bit.
Light swatch on bare skin and two swipe swatch over MAC Bare Study Paint as a primer: