Program aims to educate young consumers about mined stones’ positive qualities.
Spending will reach between $5.23 trillion and $5.28 trillion, federation forecasts.
Sales reach $964.4 billion for the period, according to US Census Bureau.
Electronics, toys and apparel were top-selling categories, Adobe Analytics reports.
Some 142 million will turn up this year, NRF predicts.
Figure beat NRF’s original prediction by more than 18 million.
Sales for the month up 6% year on year, according to Adobe Analytics.
Revenue for November and December will rise 4.8% to $221.8 billion, predicts Adobe.