My dupe contenders were L-R W7 Metallic Saturn, W7 Magnetic Gold and China Glaze Agro.
In the bottle I thought they all looked pretty close, but on the nail there were some differences.
I used Metallic Saturn on my middle, Magnetic Gold on ring and Agro on little finger.
This picture says it all, Metallic Saturn is more gold, Agro is more green and without the magnet the "gold" looks quite grey!
No dupes here!