Test Website - You are connected to the test webserver. To return to the live website, click here

Brazilianite Gemstones by Colour

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

Brazilianite Gemstones by Size

This table shows distribution of Brazilianite 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:0.46 cts
Heaviest:9.11 cts
Average:2.92 cts
Total photos:14
Do you have a larger Brazilianite? Why not upload a photo?
0.46ct to 1.33ct1.33ct to 2.19ct2.19ct to 3.05ct3.05ct to 3.92ct3.92ct to 4.78ct4.78ct to 5.65ct5.65ct to 6.52ct6.51ct to 7.38ct7.38ct to 8.25ct8.25ct to 9.11ct
General Information
Chemical Formula
NaAl
 
3
(PO
 
4
)
 
2
(OH)
 
4
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Brazilianite Treatments
This material has been reported to fade (Sinkankas, 1972) and to lose its greenish color completely on being heated above 140°C; irradiation did not reverse this change (Requardt et al, 1982) - Nassau (1984)
Physical Properties of Brazilianite
Mohs Hardness5.5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity2.91 to 3.00
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
TenacityBrittle
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Cleavage QualityPerfect
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
FractureConchoidal
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Refractive Index1.602 to 1.625
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical CharacterBiaxial/+
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Birefringence0.018 to 0.021
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
PleochroismThe dichroism is insignificant
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Dispersion
Fatal error: Uncaught mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/var/www/gemdat/gemshow_class.php:690 Stack trace: #0 /big/var/www/gemdat/gemshow_class.php(690): mysqli->query() #1 /big/var/www/gemdat/gemshow_class.php(505): gemshow_class->showdata() #2 /big/var/www/gemdat/gemshow_class.php(1469): gemshow_class->showblock() #3 /big/var/www/gemdat/gshow.php(151): gemshow_class->do_optical() #4 {main} thrown in /big/var/www/gemdat/gemshow_class.php on line 690