Mauritia arabica amethystea … Hyper callous .. 50.80 mm Gem

Incredible callous shell …. Amazing size , very wide and very special colour … Aberrant purple cowry … Collected at the foot of an old volcano, This coloration is due to the environment where they live … with a sea water containing a hight level of acidity..May be from the sulfuric sources of whater coming from the volcano… Really amazing shell…