Apatite
Apatite is a phosphate mineral known for its wide range of vibrant colors, including blue, green, yellow, and violet. It is a popular collector’s gemstone due to its brightness and transparency, but its moderate softness limits its use in everyday jewelry.
About
Apatite
Apatite is a naturally occurring phosphate mineral group with the general chemical formula Ca₅(PO₄)₃(F,Cl,OH). It belongs to the phosphate mineral group and crystallizes in the hexagonal crystal system. The name “Apatite” is derived from the Greek word “apate,” meaning “deceit,” because it is often mistaken for other gemstones due to its wide range of colors and appearances. Apatite occurs in a variety of striking colors, including blue, green, yellow, violet, brown, and even colorless forms. Among these, neon blue apatite from Madagascar is particularly popular and highly valued for its vivid color and brilliance. The gemstone can be transparent to translucent and exhibits a vitreous (glass-like) luster, making it visually appealing when cut.
Physical & Chemical Properties
| Name | Apatite |
|---|---|
| Scientific Name | Apatite |
| Mineral Group | Phosphate |
| Hardness (Mohs) | 5 |
| Color | Blue, green, yellow, violet |
| Origin | Madagascar, Brazil, Mexico, Myanmar, Russia, USA |
| Chemical Formula | Ca₅(PO₄)₃(F,Cl,OH) |
Quick Facts
| Crystal System | Hexagonal |
|---|---|
| Specific Gravity | 3.1 – 3.2 |
| Birthstone | None |
| Refractive Index | 1.63 – 1.65 |
| Optical Character | Uniaxial |
| Dispersion | Moderate |
| Major Sources | Madagascar, Brazil, Mexico, Myanmar, Russia, USA |
| Treatments | Apatite is usually untreated, but some stones may be heat-treated to improve color. |
| Price Range | $30 – $100 |
| Care Instructions | Avoid scratches and rough use Clean with mild soap and water Avoid chemicals and ultrasonic cleaners |