Howlite Photos                
Cochise College                                                                                                          
Photos of Gemstones
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Roger Weller, geology instructor                       

wellerr@cochise.edu

Howlite
last edited:  12/10/07    number of photos:  7
Howlite is H₅Ca₂SiB₅O₁₄
hardness: 3.5                                                                                                      
howlite as a mineral

howlite in jewelry

howlite pendant:  A  B

dyed howlite
tumble polished dyed howlite:  A  B
 

howlite, uncut

rough howlite:  A  B  C

USA locations
     Sterling Mine, Tick Canyon, California

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.
copyright 2007-R.Weller