Indicolite (Blue Tourmaline)

Big Photo

Brazil
6.89 carats
© Palagems

Indicolite (named after its colour) is a blue in all shades variety of tourmaline.
13 photos

Indicolite Gemstones by Colour

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

Indicolite Gemstones by Size

This table shows distribution of Indicolite 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:1.3 cts
Heaviest:15.49 cts
Average:8.39 cts
Total photos:13
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1.30ct to 2.72ct2.72ct to 4.14ct4.14ct to 5.56ct5.56ct to 6.98ct6.98ct to 8.40ct8.40ct to 9.81ct9.81ct to 11.23ct11.23ct to 12.65ct12.65ct to 14.07ct14.07ct to 15.49ct
General Information
A variety or type of:Tourmaline
Chemical Formula
Na(Li
 
1.5
Al
 
1.5
)Al
 
6
(Si
 
6
O
 
18
)(BO
 
3
)
 
3
(OH)
 
3
(OH)
Gemdat.org, Management Team (2012) Formula given for elbaite. Most, but not all, indicolite is elbaite.More from other references
Indicolite Treatments
Routinely heat-treated to lighten the color - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 5
Mohs Hardness7 to 7.5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity
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