When these initially were featured on amazon, I dismissed the red one, thinking it was too traditional and my look cheap...sometimes "red" items look orange or ugly pink. So I opted for the purple one. It is sort of a dusty purple, very different, yet lovely. If you like slightly different things, the purple is a nice interpretation of a traditional red heart.

I must say, I was very wrong about the red...it is AWESOME!! It is a lovely rich red, not too deep (like blood) nor to faint (so it doesn't look like a cheap piece of plastic. I didn't have any trouble with the glass part not fitting correctly to the metal. It is about the size of a quarter. Very shiny and sparkly. Even the chain isn't as thin as many pendants. I have gotten many compliments while wearing it. Would make very lovely Valentine's Day gift.