Apatite name is coming from a greek word “apate” meaning “to deceit” as it is a gemstone that can easily confuse because of the color shown by some specimens that turn from blue to green when we move the stone! Apatite can also possibly be mistaken with other gemstones and especially tourmaline.
Apatite with a hardness of 5 on the Moh’s scale of hardness is a rather soft stone. This characteristic along with the fact that it is a brittle stone make it of limited use in jewelry as these stone often break when the jeweler try to set them. Cutting and setting apatites is a real challenge! Apatite is also sensitive to acids.