The correct option is Sandstone.
Explanation
The Didarganj Yakshini is widely regarded as one of the finest examples of Mauryan art, distinguished by its sophisticated craftsmanship and specific surface treatment.
Detailed Analysis:
- The sculpture is carved from Chunar Sandstone.
- It is celebrated for its mirror-like luster, a technique known as the "Mauryan Polish". This high-gloss finish is a hallmark of Mauryan court art and is also observed on Ashokan pillars and animal capitals.
- Discovered at Didarganj (near Patna, Bihar), the life-size statue depicts a female figure holding a chauri (fly-whisk), symbolizing an attendant of high rank.
- While the use of sandstone is common in various periods of Indian art, the specific combination of Chunar sandstone and the unique high polish firmly associates this piece with the Mauryan artistic tradition.
Key Takeaway: The Didarganj Yakshini is a masterpiece of Mauryan sculpture made from polished Chunar Sandstone, exemplifying the technical excellence of the "Mauryan Polish".