Shiva lingam stones have special significance for the Hindu faith. They are from the Narmada River in India and are usually locally hand polished. Technically they are composed of cryptocrystalline quartz coloured by iron oxide. This nicely banded one is discreetly mounted on a white plastic base. I think that this can work in either 1:12 or 1:6 scales.
15/16 inch (2.4 cm) wide, 7/16 inch (1.1 cm) deep and just over 1/2 inch (1.3 cm) tall.