The Apple CEO presented the president with a “unique” piece of glass held by 24-karat gold during a celebratory event Wednesday in the Oval Office.

Billionaire Apple CEO Tim Cook presented Donald Trump with a gaudy personalized gift boasting a 24-karat gold base as the tech giant woo’ed the president at the White House on Wednesday. Cook dropped in to the White House bearing his golden gift to announce the tech company’s extra $100 billion investment in American manufacturing as the president still waves the threat of tariffs.

Nobody would describe it as ethically noble,” a Harvard professor told Fortune. “But it was just a small gesture underscoring the Apple commitment.”