I am sick with the disease that will not go away.
Apatite is infrequently used as a gemstone. Transparent stones of clean color have been faceted, and chatoyant specimens have been cabochon cut. Chatoyant stones are known as cat's-eye apatite, transparent green stones are known as asparagus stone, and blue stones have been called moroxite.
I don't know that I have ever seen apatite as a gemstone, but I was Googling for a cut stone that would match this color.