The picture on the website is very misleading as to size.  The earring the model is wearing is not the 4mm size. The earrings I received ( I ordered the 4mm ) is teeny, tiny almost hard to see that it is an amethyst when you are wearing it. I like the 14K white gold and the silicone back but the small size of the gem is a disappointment after seeing the picture on the website. Beware and pay close attention to the measurement.