Septarian - Carved and Polished Bowl - Statement Specimen metal and CaCO₃

and CaCO₃

Geological Age: 100mya

open form with layered walls

but also as a good natural example of how tanzanite forms before any cutting or heating for jewelry

glassy luster

Septarian - Carved and Polished Bowl - Statement Specimen metal and CaCO₃Mined from: Mahajanga Province, Madagascar Description: This one of a kind Septarian carved and polished bowl statement specimen from Madagascar features a wide, shallow bowl shape with a polished interior and a natural, uneven rim. The stone shows the classic Septarian patterning, with grey brown limestone sections broken up by dark seam lines and yellow to honey coloured calcite veins. The interior has been smoothly polished to bring out the cracked