COATS: 2 of each
SOURCE: goldenroseusa.com - part of my very first purchase from them, over a year ago.
COMMENTS: Some people who have these holographic minis have mentioned that theirs changed over time. Mine still look the same as they did when I got them. I've had to add thinner to almost all of them, but they remained the same color-wise. I like these because they still look decent indoors in indirect lighting.
Indoors - artificial lighting, first photo (just below this) is without topcoat:
This is how they look when they're in regular lighting - there is still a reasonable amount of color in the polish to keep it from looking washed out like lots of other holos.