"What are you talking about?" demanded Alwynne.
"Which is it, anyhow?"
"Which is what?"
"Which is your favourite stone?"
Alwynne gazed at him blankly.
"What on earth——?" she began.
Roger frowned anew.
"Don't argue with me. Which is your favourite stone?"
"I don't know—emeralds, I think."
He gave a sigh of relief, not entirely make-believe.