Powellite

Big Photo

India
0.80 carats
© Rarestone.com

Powellite is named after Major J.W. Powell, American explorer, geologist and ethnologist.

Powellite forms transparent to translucent colourless, straw yellow, greenish yellow, greenish blue or blue crystals with characteristically greasy or subadamantine lustre.

Facetable material is rare as crystals are usually small and seldom exceed 2 carats.
5 photos

Powellite Gemstones by Colour

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

Powellite Gemstones by Size

This table shows distribution of Powellite 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:0.80 cts
Heaviest:5.09 cts
Average:2.06 cts
Total photos:4
Do you have a larger Powellite? Why not upload a photo?
0.80ct to 1.23ct1.23ct to 1.66ct1.66ct to 2.09ct2.09ct to 2.52ct2.52ct to 2.95ct2.95ct to 3.37ct3.37ct to 3.80ct3.80ct to 4.23ct4.23ct to 4.66ct4.66ct to 5.09ct
General Information
Chemical Formula
CaMoO
 
4
Michael O’Donoghue, Gems, Sixth Edition (2006)
Mohs Hardness
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