Henry didn't hear Morty at all. He stared intently at the gem.
"Have you tried touching it?" suggested Mordecai.
"...no," replied Heinrich.
Henry reached out to touch the topaz with his nose.
Nothing happened.
"Have you tried concentrating?"
"...no"
Henry closed his eyes and began to actually focus. He could feel Morty's eyes on the back of his head.
Mordecai watched. He felt some sort of itch on the back of his neck before the gem abruptly rooted itself into the ground.
Henry recoiled. "Was that supposed to happen?"
"I don't know," said Mordecai. "We can wait."
It's not like they had anything better to do.