I edited (Cropped) the photos on my dad's wide computer screen so on a normal computer my nails look ridiculously long; they're not!
GOSH Holographic. Normal price: £5.
The second photo is in natural light; the polish looks like a plain silver.
The third photo is with a flash (False light) and you can see the holographic effect (Sorry for the red hands!).
It took 4 coats but I knew it would take quite a few.
It's very unusual and looks like it should belong in a sci-fi movie!