Who created "Buddha Shakyamuni Seated in Meditation (Dhyanamudra)"?

Buddha Shakyamuni Seated in Meditation (Dhyanamudra) was created by Unknown in Chola period, about 12th century.

What medium is "Buddha Shakyamuni Seated in Meditation (Dhyanamudra)"?

Buddha Shakyamuni Seated in Meditation (Dhyanamudra) is Granite.

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This artwork was created Chola period, about 12th century.

Unknown, Chola period, about 12th century