Prehnite, Quartz and Calcite Cluster - NBB 092

Measurements:   25 x 24 x 14 mm

Description:  Three quartz crystals with delicate prehnite crystals and a piece of gemmy calcite with beautiful facets. 

The clear, gemmy quartz crystals have a very light amethyst base.

The quartz terminations have some minute nicks and the prehnite has a nick to the lower part of the specimen.

This is really a top class little specimen!

Chemical Composition:  Ca₂Al₂Si₃O₁₀(OH)₂    (prehnite)  
                                      SiO₂  (quartz)  
                                      CaCO₃  (calcite) 
                                 
Hardness on Mohs Scale:   (prehnite) 6-6.5
                                         (quartz)  7                                                                                         (calcite)  3 

Location:  Brandberg, Namibia

Specimen Code:  NBB 092

US $ 120