- Color: green, greenish yellow, blue, violet
- Hardness: 5
- Refractive index: 1.60 - 1.67
- Density: 3.17 - 3.35
- Chemical composition: Phosphate composition
- Crystal structure: hexagonal
- Lustre: vitreous
- Origins: Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma.
Due to its insufficient hardness the stone is rarely used in jewelry production. However collectors do appreciate intensely colored blue and violet stones. Apatites are very heat sensitive.