For selling 100.000 digital downloads or more.
https://aramajapan.com/news/chart/th...5/#more-103385
This is a recap of Ayu songs released on this decade that have received certifications for their digital downloads:
. MOON - Gold
. crossroad - Gold
. Virgin Road - Gold
. Love song - Gold
. progress - Platinum (250.000 digital downloads or more)
. how beautiful you are - Gold
. You & Me - Gold
. Song 4 U - Gold
. Hello New Me - Gold