I have never owned a Nars polish, technically they are a newer brand for me and the ones I have seen at Sephora are a little out of my price rang for polish. That being said, I have heard great reviews on this brands polish and formula and that may justify the price for some.
One polish from Nars that I'm sure everyone's heard of is Zulu, this was re-released recently. I have seen swatches of Zulu for a while now and I have really come to love it. I made the decision to franken something close after seeing a recipe on another blog for a Zulu dupe. I didn't have the same polishes, but I made due with what I had.
Zulu, for those who don't know, is a deep forest green jelly and is super glossy when dry. For my version I used a Maybelline clear base/top coat, a no name deep blue jelly, a bright yellow no name jelly and Caboodles Black.
I couldn't tell you exactly how much I used of each polish because I was constantly adding to the bottle to get the right colour. Pictured is what I have so far, I am pretty happy with the outcome. I only needed two coats to reach opacity. I still want to add some more yellow to the polish as I think it leans slightly too blue. The yellow polish was giving me the most issues of the bunch, it was so hard to get it out of the bottle!
The pictures actually make the colour appeal lighter than it really is and the polish is still a work in progress. I am playing around with it a bit more and will post up the end result once it is completed.