Axinite
Baja California, Mexico
3.14 carats
© Rarestone.com
Large clean axinite specimens are rare. Most crystals have some inclusions, usually in the form of delicate veils.
Marked variations in hardness have been reported.
Axinite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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Axinite Gemstones by Size
This table shows distribution of Axinite 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:0.18 cts
Heaviest:6.97 cts
Average:2.60 cts
Total photos:15
Do you have a larger Axinite? Why not upload a photo?
| General Information | ||||||||||||||||||
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| Varieties/Types: | Ferro-axinite - Iron-dominant Axinite mineral. Magnesio-axinite - Magnesium-dominant member of Axinite group. Manganaxinite - Manganese-dominant member of Axinite group. | |||||||||||||||||
| Chemical Formula |
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| Physical Properties of Axinite | ||||||||||||||||||
| Mohs Hardness | 6.5 to 7, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Specific Gravity | 3.26 to 3.36, Gemstones of the world (2001) More from other references | |||||||||||||||||
| Tenacity | Brittle, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Cleavage Quality | Good, Gemstones of the world (2001) More from other references | |||||||||||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||||||||||
| Optical Properties of Axinite | ||||||||||||||||||
| Refractive Index | 1.656 to 1.704, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Optical Character | Biaxial/+,-, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Birefringence | 0.009 to 0.012, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Pleochroism | Orange/brown stones - strong trichroism: olive green - red brown to violet - yellow brown, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Dispersion | 0.018 to 0.020, Gemstones of the world (2001) More from other references | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Brown, green, yellowish-green, bluish-green, blue, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Causes of Colour | Blue, V3+ in octahedral coordination, Pragmatic Spectroscopy For Gemologists (2011) | |||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||||
| Fluorescence (Short Wave UV) | Inert to orangy-red - deep red (yellowish stones), Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Fluorescence (Long-Wave UV) | Orange-red, Gemmological Tables (2004) | |||||||||||||||||
| Crystallography of Axinite | ||||||||||||||||||
| Crystal System | Triclinic, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Habit | Crystals are characteristically wedge- or axe-shaped., Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Geological Environment | ||||||||||||||||||
| Where found: | Occurs in basic igneous and contact metamorphic rocks., Gemstones (2009) | |||||||||||||||||
| Spectrographic Data | ||||||||||||||||||
| Calculated Spectra: Click spectra for more information | Axinite - Locality: Brazil | |||||||||||||||||
| Inclusions in Axinite | ||||||||||||||||||
| Goethite fibres - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 18 | ||||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Axinite information at mindat.org | |||||||||||||||||