Opalescent quartz with manganese dendrites, Brazil.

120,00€

Polished section of opalescent quartz (cacholong) showing beautiful black Manganese dendrites, from Brazil.
The appearance is reminiscent of “Mousse” agates. This specimen comes from the mineral collection of Deyrolle, a naturalist dealer in Paris, and is supplied with its original label, which dates from 1950/1970.