This intriguing Serifos cluster is a 360 degree thumbnail specimen of outstanding quality.  
There are tiny hematite black ball's which are magnetic, giving it another interesting element. They very cool when ya get close up, another world!
 
This beautiful piece is 32.8 grams in weight and measures 6cm at longest point.  Try finding another like this, doubt very much you could, I can't and have been looking for 2 years!!
 
Serifos comes in a number of forms; wands, clusters, crosses and leaf like shapes.  Colour ranges from Amethyst and citrine, through to light green to dark green. Translucent tapered quartz crystals with green colour due to microscopic hedenbergite-actinolite-crossite inclusions.
 
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Serifos green quartz OR Prase/prasem has become extremely rare since mass mining of sea caves in Serifos, Greece ceased in 1965.  The poplualtion at this time rose from 1500 to over 4000 approx. at the height of the mining era.
  
These pieces were bought from a private collection that has not seen the light for 30 years!