Mac pigments never disappoints. I got this color in one of the gift sets in the 2010 tartan tale collection. These are not available here anymore but if you go overseas and find an OCC store, the usually have stock of the old mac ranges.
The name of this pigment might say Teal but it is definitely more of an emerald. I took this pigment out of storage after watching Sharfaa's video "Green with Envy" (http://www.beautybulletin.com/videos/art-meets-makeup/green-with-envy-makeup)
I wondered if I had any green eyeshadows because its not a color I usually wear and then remembered I had this.
The color is very dark and pigmented. You only need a small amount to fill your lid. So even thought mac products are expensive in general, the do last quite long. The container also has a little plastic lid once you open the initial black top so that you do not get the loose pigment everywhere. Its definitely a beautiful color (something I would wear) even though it is quite bold.