Apatite
Gemological Properties
| Gemological Information for Apatite | |
|---|---|
| Color | Colorless, Yellow, Green, Violet, Blue, Pink & Brown |
| Crystal Structure | Hexagonal |
| Refractive Index | 1.634 - 1.638 |
| Durability | Fair to Poor |
| Hardness | 5 |
| Similar Stones | Topaz, Andalusite, Danburite, Barite, Tourmaline |
| Treatments | None Known at this Time |
| Country of Origin | Mexico, Brazil, Myanmar |
| Apatite Care | |
| Ultrasonic Cleaning | Risky |
| Steam Cleaning | Never |
| Warm Soapy Water | Safe |
| Chemical Attack | Attacked by Sulfuric and Hydrochloric Acid |
| Light Sensitivity | Stable with Some Fading |
| Heat Sensitivity | Sensitive, Changes Color |
Online G&G Articles on Apatite
- Summer 1962, Cat's-eye apatite, p. 315, 2pp.
- Summer 1963, Yellow cat's-eye apatite, p. 44, 1p.
- Winter 1965, Cat's-eye apatite, p. 372, 1p.
- Summer 1966, A cat's-eye apatite of 220 cts., p. 46, 1p.
- Winter 1972, Rare Earth Absorption Spectra in Apatite, by Anderson, p. 101, 1p.
- Winter 1972, A 40 ct. cat's-eye apatite, p. 114, 1p.