Create your own stunning emerald nail art with nails inc spitalfields nail polish use the clever little magnet hidden in the lid to produce a professional looking fishnet nail design nails inc spitalfields nail polish has been specially developed with metallic particles to create a fishnet pattern on the nail using magnetic forces as the magnet is held over the nail the iron powder in the formulation gravitates toward the magnet forming the pattern for an astonishing finish you wont bel