I will say a thing or two about the formula at the end of this post as they are nearly identical. My Valentine's choice would be Glam Polish Coven - a red jelly glitter bomb, filled with tiny rainbow holo particles and bigger red glitter.
Glam Polish Book of Shadows is Coven's blue cousin - a blue jelly base filled with rainbow holo particles and blue glitter (though to me they seem of smaller size than in Coven).
I applied two coats of both, Coven and Book of Shadows over my regular Base Coat. Formula and consistency wise they are both equal jelly perfection. Dry time is a tad longer with Book of Shadows. And while with Coven the red glitter really pops out Book of Shadows shows the scattered rainbow holo particles stronger. Both dry gritty and I had to apply two thicker coats of Glitter Gal Gloss boss to achieve a smooth surface of my nails.
Final thoughts: truth being told, they are maybe more christmasy than Valentine's Day choices but I definitely find Coven a perfect choice for those who want to wear a red glitter for Valentine's Day. Book of Shadow would be my not so Valentine pick.
I ordered those Glam Polishes with Overall Beauty.
I look forward to reading your comments - thanks for dropping by!!!