It’s Not Proper

Following his experience with the Vinculum, Henry had good reason to look at the orange sphere in his hand with caution but it didn't seem to possess a mind of its own. It didn't try to tempt him with thoughts or visions of grandeur and power of control. It just pulsed with energy. A lot of energy. 

"I'll take this," Henry mumbled and with a slight sleight of hand, he sent the sphere into his Inventory with plans to inquire about its uses or properties from someone who could explain it.

At the moment, the only person that came to Henry's mind who would be capable of that was Elminster and he certainly considered it as he put the matter aside for now.

"What was that?" Louis asked and Henry looked back at him with a raised brow,

"What was what?" He asked. 

"That sphere… It was in your hand just now and it vanished," Louis said. 

"Oh," Henry said in the realization that his sleight of hand had not been smooth enough to avoid detection.