“Tim noticed the necklace you were wearing, and he saw at a glance that it was zircon from the western Sierra Nevada.”

“Is that so? Why didn’t he tell me, and how will you answer him?”

“I say you really have good eyesight, worthy of being the leader of geological investigation.”

“Ha ha, what else did he ask?”

“He guessed that I must have given you the necklace.”

“Tim?......