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Ulexite

Big Photo

California, USA
8.89 carats
© Rarestone.com

3 photos

Ulexite Gemstones by Colour

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

Ulexite Gemstones by Size

This table shows distribution of Ulexite 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:4.71 cts
Heaviest:8.89 cts
Average:6.73 cts
Total photos:3
Do you have a larger Ulexite? Why not upload a photo?
4.71ct to 5.13ct5.13ct to 5.55ct5.55ct to 5.96ct5.96ct to 6.38ct6.38ct to 6.80ct6.80ct to 7.22ct7.22ct to 7.64ct7.64ct to 8.05ct8.05ct to 8.47ct8.47ct to 8.89ct
General Information
Chemical Formula
NaCaB
 
5
O
 
6
(OH)
 
6
 · 5H
 
2
O
Michael O’Donoghue, Gems, Sixth Edition (2006)
Physical Properties of Ulexite
Mohs Hardness2
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity1.65 to 1.99
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
TenacityBrittle
Anthony et al, Handbook of mineralogy (2001)
Cleavage QualityPerfect
Michael O’Donoghue, Gems, Sixth Edition (2006)
FractureUneven
Anthony et al, Handbook of mineralogy (2001) Uneven across fiber groups
Refractive Index1.491 to 1.520
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical Character
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Call Stack
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