Ramayana
माणिक्यकृतसोपानाः स्फाटिकान्तरकुट्टिमाः । फुल्लपद्मोत्पलवनाश्चक्रवाकोपशोभिताः ॥ 7-42-11 ॥
They had steps made of rubies and pavements inlaid with crystal, with groves of full-blown lotuses and water-lilies, and were graced by chakravaka birds.
english translation