Editor Reviews:

Amazon.com Product Description:
Round and marquise-shaped amethyst stones form bright butterfly wings in these charming sterling silver stud earrings. The stones are held securely in prong settings and frame a silver centerpiece detailed with polished bead accents. Set on posts with friction back closures, these earrings are a sweet accent for everyday wear. Amethyst, the birthstone for February, is a gemstone that has been prized by royalty throughout the ages for its regal purple color.

Rating : - Small but appreciated
These are definitely small butterflies, easily fitting within the diameter of a dime, if you don't have a dime available take a look at your pinky nail, that's probably a reasonable approximation for most people.

That being said some people prefer smaller jewelery and so keep that in mind when purchasing this item for adults. It is beautiful jewelery that was greatly appreciated as a gift in my case.