On January 10 1985, Madonna’s Like A Virgin single was certified gold for shipment of 1 million units.
Prior to January 1 1989, the certification thresholds were Gold (1,000,000 units), and Platinum (2,000,000 units) in the USA (Recording Industry Association of America).
Today In Madonna History 
If nothing else, Like a Virgin was a sight and a sound to behold-a bold new voice had arrived and Rock was never again quite the same, thanks to Madonna.