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
Similar Stones:TopazAndalusite, 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

Gems & Gemology: The Quarterly Journal of the Gemological Institute of America


  • 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.