This is from wikipedia
The appearance of "violet" eyes is thought to occur from the mixing of red and blue reflections. Some albinos have eyes that appear violet. Violet eyes are genetically similar to blue eyes, i.e., they are a reflection, pigment, or variant of blue. Violet eyes are extremely rare; some people remain convinced that it is impossible to have violet colored eyes. Though a violet color is considered rather unique when discussing eye color, there is a very small number of people possessing this very rare coloring. However violet eyes are commonly found in a few remote and high altitude areas of northern Kashmir.
Yep. I actually did have an opportunity to meet her about 25 years ago in person and she had the most beautiful eyes I've ever seen. In the right light they truly are a deep purple color.
Yes they are. Watch The Taming of the Shrew. There's a great scene where she's peering out a window, and you see only her eyes.