Star Gazer was the very first glitter nail polish I bought that can be worn as is, although for this mani, I layered it on top of Sweet Cherry nail polish in "Snow White." Star Gazer has a peach base, so my nails looked orange-y than white. The glitter is mostly silver hex ones, although there are some little glitters, too, making it look like stars in the sky.
I personally didn't like to put it as is. Despite the peach base, I loved layering this on top of a base nail polish, regardless of the color. I loved that there is a generous amount of glitter and that I didn't have to fish out the glitters from the bottle. Application is just fine, although there is a tendency for the hex glitters to come together while applying, resulting to a big clump. One coat is enough for this (if you're layering it on top of a base nail polish), but using as is, you might want to go for two coats.
I don't know if it's noticeable, but I actually attempted a little glitter sandwich mani here - After layering one coat of Star Gazer, I let it dry first then topped it with a thin coat of Snow White, then layered it again with Star Gazer. I realized, the glitter has to be dark for me to pull off such attempt, but I am quite pleased with the result, although I had to take a close look on my nails to see the effect.