The apatite of Greek Apatao, deceived-duped, named because of the possibilities of confusion notably with the Beryl.
It is a fluorinated or chlorinated calcium phosphate. Its hardness is low, 5 on the Moshs scale, which makes it a gem reserved for collectors, hardly usable in jewelry or earrings.
To determine the quality of a stone, the color is the most important criterion. And remember, all stones are fragile! even diamonds ....
Apatites can be mounted in rings, earrings or pendants.
See my jewelry creations unique pieces, apatite ring, apatite earrings or apatite pendant or apatite bracelet or apatite on paper.