A stream of water, pure as crystal, flowed along the path, from the summit to the base.
This crystal pallor or a flushed joy—in one of the two she was most beautiful.
It was built in a perfect oval, and lighted from a crystal dome above.
Where it says, you know, "And he showed me a pure river of water, clear as crystal."
He strained his ears to listen, but the crystal was ...