Apatite and Diamond Ring, Micael Beaudry.
Apatite and Diamond Ring, Micael Beaudry.

Commonly found as a lively teal-turquoise blue color transparent crystal, it can also be yellow, green, pink, or purple. Having a hardness on the Moh’s Scale of 5 makes the gem less popular for use in jewelry than gems higher up the scale. Care must be taken when wearing apatite set in a ring or bracelet as it scratches relatively easily.

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
Further Resources
Gems & Gemology: The Quarterly Journal of The Gemological Institute of America.

Gem: 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.
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