Gem Quality Prehnite Ball on Matrix - NBB 001

Measurements:  64 x 44 x 35 mm

Description:  A 30 mm wide gem quality prehnite ball on clear quartz and basalt matrix. 

There is no apparent damage to the prehnite. 

This specimen is of very high quality and better than some of the best pieces exhibited in top collections. It will most certainly be a prize specimen in any collection!

Chemical Composition:  Ca₂Al₂Si₃O₁₀(OH)₂  (prehnite)  
                                    SiO₂  (quartz)

Hardness on Mohs Scale:  (prehnite)  6-6.5
                                      (quartz)  7 

Location:  Brandberg, Namibia

Specimen Code:  NBB 001

US $ 650