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Apatite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 
 
 
 
 
 
 
 
 

Apatite Gemstones by Size

This table shows distribution of Apatite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.44 cts
Heaviest:17.60 cts
Average:5.29 cts
Total photos:37
Do you have a larger Apatite? Why not upload a photo?
0.44ct to 2.16ct2.16ct to 3.87ct3.87ct to 5.59ct5.59ct to 7.30ct7.30ct to 9.02ct9.02ct to 10.74ct10.74ct to 12.45ct12.45ct to 14.17ct14.17ct to 15.88ct15.88ct to 17.60ct
General Information
Varieties/Types:
Moroxite - A blue-green variety of apatite.
Chemical Formula
Ca
 
5
(F,Cl)(PO
 
4
)
 
3
Arthur Thomas, Gemstones (2009)
Apatite Treatments
Some violet apatite turns green on exposure to radium (Przibram and Caffyn, 1956) and violet apatite which has lost its color from heating (perhaps to 500°C) is turned partly green and partly violet; there is no effect of electrons and only a minor effect of X-rays on some yellow and green specimens (Pough and Rogers, 1947; Pough, 1957) – Nassau (1984)
Color commonly improved by heat-treatment - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 4
Physical Properties of Apatite
Mohs Hardness5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity3.14 to 3.23
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Cleavage QualityFair
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Apatite
Refractive Index1.628 to 1.662
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Optical CharacterUniaxial/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Birefringence0.002 to 0.008
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
PleochroismBlue - strong dichroism: colorless-(yellowish) - blue; Yellow - weak: greenish-yellow - golden-yellow; Green - weak: yellow - green - blue-green
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Dispersion0.016
Arthur Thomas, Gemstones (2009)
ChatoyancyYes
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Colour
Colour (General)Colourless, yellow, green, blue, violet
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Causes of ColourPink, F vacancy with a trapped electron. Dark blue, O2- Mn5+ charge transfer
W. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011)
TransparencyTransparent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
LustreVitreous
Arthur Thomas, Gemstones (2009)
Fluorescence & other light emissions
Fluorescence (General)LW and SW: various intensities of lilac-pink (yellow apatites), blue (blue apatites) or green to greenish-yellow (green and violet apatites)
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Fluorescence (Short Wave UV)Violet: common light purple
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Fluorescence (Long-Wave UV)Violet: common greenish-yellow
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Fluorescence (X-RAY)There would be little need for
evaluating apatite’s response to X-rays.
Michael O’Donoghue, Gems, Sixth Edition (2006)
Crystallography of Apatite
Crystal SystemHexagonal
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
HabitPrismatic
Arthur Thomas, Gemstones (2009)
Geological Environment
Where found:Gem apatite usually occurring in pegmatites, hydrothermal veins or alluvially.
Michael O’Donoghue, Gems, Sixth Edition (2006)
Spectrographic Data
Calculated Spectra:
Click spectra for more information
Fluorapatite - Locality: Unrecorded
Fluorapatite - Locality: Brazil
Apatite - Locality: tanaznia
Inclusions in Apatite
Healing cracks, hollow tubes - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 16
Further Information
Mineral information:Apatite information at mindat.org
Significant Gem Localities
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
Koivula et al. (1993)
India
 
  • Tamil Nadu
    • Salem District
S. Fernandes (1999)
Kenya
 
Barot et al. (1995)
  • Taita-Taveta County
Madagascar
 
  • Anosy
    • Betroka
      • Mahasoa Est
Pezzotta (1999)
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 383
        • Bernardmyo
Ted Themelis (2008) Gems & mines of Mogok
        • Kyauk-Pyat-That
Ted Themelis (2008) Gems & mines of Mogok
        • Mogok Valley
          • Dattaw-taung (Dattaw hill)
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
[var: Fluorapatite] Ted Themelis (2008) Gems & mines of Mogok
        • Pein-Pyit (Painpyit; Pyan Pyit)
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
[var: Fluorapatite] Ted Themelis (2008) Gems & mines of Mogok
Norway
 
  • Agder
    • Arendal
      • Barbudalen
        • SteinsÃ¥s
[var: Moroxite] Precious Stones & Gems, Edwin Streeter, 1898
Russia
 
  • Irkutsk Oblast
    • Lake Baikal area
      • Slyudyanka (Sludyanka)
        • Malaya Bystraya River Valley
Y. Shelementiev (1999)
South Africa
 
  • Limpopo
    • Mopani District Municipality
      • Ba-Phalaborwa Local Municipality
        • Phalaborwa
Gemstones, A.Thomas, 2009, p.83
Gemstones, A.Thomas, 2009, p.83
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
Milisenda and Henn (1999)
Milisenda and Henn (1999)
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