Indian Iron Tantric Lingam

A single red mark on slate-dark stone, and the eye has its orders.

This tantric lingam comes from the Narmada River in India. It is quartz crystal with iron oxide inclusions, of indeterminate age. In some tantric traditions a plain ovoid like this serves as a focus for meditation on the union of Shiva and Shakti, male and female energy, with no image needed beyond the stone. The polished form is a dark slate gray. Near the top sits an elongated red oval, ringed and centered in pale yellow. Nine inches high and 5.25 in diameter.

It has been saying the same thing for a long time.