At hearing that the swords were of Elven make Thorin looked disgusted and moved as if he were going to return the blade he held to where he found it. He had no desire to keep some stinking elf's weapon. 
"You could not wish for a finer blade in all of Middle-earth!" Gandalf snapped in frustration at the dwarf prince. "These blades came from Gondolin, forged by the High Elves of the First Age!"

Feeling scolded, Thorin kept his grip on the sword, his hand closing around the hilt as he drew the sword from it's sheathe to balance it in his hand and see how it felt to wield it.