China Glaze Optical Illusion is the teal microglitter of the 2012 Prismatic Chroma Glitter collection... it's lovely! it's very similar to China Glaze Liquid Crystal (the blue from the same collection) only Optical Illusion is missing the strong pink duochrome... it's pretty obvious in the bottle, but very slight on the nail. it does have quite a lot of multicolored large glitter pieces and it also has different colors of microglitter... it's a gorgeous polish! i used two thick coats over black for full opacity, pretty much the same formulation as the rest of the collection.
one coat Seche Clear, one coat OPI Black Onyx, two coats Optical Illusion, one coat Seche Vite.
i'm just majorly bummed about how little the duochrome effects of this collection transfer to the nails... the bottles are such a tease! even without the duochrome quality, this polish is a stunner, i heartily recommend it! Ria :)