Amazonite
Brazil
2.93 carats
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Amazonite 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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Amazonite Gemstones by Size
This table shows distribution of Amazonite 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:0.31 cts
Heaviest:33.86 cts
Average:10.59 cts
Total photos:28
Do you have a larger Amazonite? Why not upload a photo?
| General Information | |||||||||||||||||
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| A variety or type of: | Microcline, which is a variety of Feldspar | ||||||||||||||||
| Other Names/Trade Names: | |||||||||||||||||
| Chemical Formula |
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| Amazonite Treatments | |||||||||||||||||
| Amazonite – colour is lost on heating to over 300°C and can be restored by irradiation if heating was insufficient (500°C) to cause water loss. Often dyed (uniform color), impregnated with wax or coated with plastic (scratch test, hot point test) - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 8 | |||||||||||||||||
| Physical Properties of Amazonite | |||||||||||||||||
| Mohs Hardness | 6 to 6.5, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Specific Gravity | 2.55 to 2.57, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Tenacity | Brittle, Gemstones of the world (2001) | ||||||||||||||||
| Cleavage Quality | Perfect, Gems, Sixth Edition (2006) | ||||||||||||||||
| Fracture | Uneven,Conchoidal, Gems, Sixth Edition (2006) | ||||||||||||||||
| Optical Properties of Amazonite | |||||||||||||||||
| Refractive Index | 1.522 to 1.530, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Optical Character | Biaxial/-, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Birefringence | 0.008 to 0.010, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Pleochroism | Weak, Gems, Sixth Edition (2006) | ||||||||||||||||
| Dispersion | Weak, Gems, Sixth Edition (2006) | ||||||||||||||||
| Colour | |||||||||||||||||
| Colour (General) | Green, blue-green, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Transparency | Translucent,Opaque, Blue Chart Gem Identification (2010) Opaque with white grid-like pattern, rarely translucentMore from other references | ||||||||||||||||
| Lustre | Vitreous, Gemstones of the world (2001) | ||||||||||||||||
| Fluorescence & other light emissions | |||||||||||||||||
| Fluorescence (General) | Weak; olive-green, Gemstones of the world (2001) | ||||||||||||||||
| Fluorescence (Short Wave UV) | Some amazonite will fluoresce medium or weak red, Gems, Sixth Edition (2006) | ||||||||||||||||
| Fluorescence (Long-Wave UV) | Possible yellow-green, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Crystallography of Amazonite | |||||||||||||||||
| Crystal System | Triclinic, Blue Chart Gem Identification (2010) More from other references | ||||||||||||||||
| Habit | Prismatic, Gemstones of the world (2001) | ||||||||||||||||
| Further Information | |||||||||||||||||
| Mineral information: | Amazonite information at mindat.org | ||||||||||||||||
| Significant Gem Localities | |||||||||||||||||
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