This is the third polish from this W7 collection, the other two, I've showed here (Salt n Pepper) and here (Mosaic). My favorites are definitely this one and Salt n Pepper. And Lava flow is indeed very similar to Salt n Pepper except for the red glittery glitter shining among the matte black glitters laying around in the milky base. The application is also the same, two coats which is awesome. I guess that it is the same polish recipe just some red glitter added.
W7 Nail Polish - Lava flow
Wet n Wild (blueish iridescent sheer shimmer)
Sure Promise (black)
Sure Promise (white)
L.A. Colors Art Deco - Red
W7 Nail Polishes bought at fragrancemad.com