I bought these for myself, to match a necklace I already had. On the whole, the earrings are exactly as described but there are a few minor tweaks that might help you make a decision. None of these really changed my mind about the purchase but it might make others pause.
The color is a very clear blue, so it looks much lighter when held up to the light. However, once worn, it darkens a little because of my skin tone so it's not really a problem for me. Not sure how it would look against very pale skin or very blonde hair.
Although it's described as a "briolette", it's really more of a fat/squat drop shape than an elongated one. Again, that wasn't problematic for me but there might be others looking for a more classic briolette shape.
Finally, the earring back catch mechanism was a little looser on one earring than not the other. Not enough to lose the earring but enough to be concerned about the effects of continuous wear. I am considering talking with Overstock about this but haven't yet. This is the main reason the earrings are getting a 4-star, rather than a 5-star.