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BIOTIT lenses are layer silicates from the mica group.
When the rock heats up in summer, the lenticular mineral formations expand2 and pop out of the surrounding rock. For this reason, they are also called "birthing stones".
The "esoteric community" naturally interprets all kinds of "wonderful" properties from these, in and of themselves totally natural processes (please read for yourself on the countless websites)
They are found in the north of Portugal, in Castanheira. The locals call the BIOTIT lentils "Pedras parideiras"
Weight of this piece is 120 grams Dimensions: Diameter 7 cm
