I like accuracy, too, Lapidarious, but I have an apatite pearl necklace that I sell every time I DON'T say what the blue stone is. When people press me, I say apatite and they FLEE! Some even say, "ew"!
Lapidarious, you have a naming gift! "Blue Mystic London Fog Imperialite Tibetan Jasper" is a mouthful, but I bet it would sell! Now you just need to go out, discover the new stone and name it that!
My research came up with Fluorapatite, Chlorapatite, and Hydroxyl-Apatite; I now know which the blue apatite is (thank you stonesandfindings!). I also discovered many things which would NOT help sales...like being the same mineral as tooth enamel and bone...or "apatite" translating to "cheat".
Apatite is a pretty stone with a lot of baggage!