spoiler Did the princesses make the amulet during School Raze?

[Shady Mist 49]

The amulet the princesses made for Twilight in season 9 when she was going to take over as ruler of Equestria, did they originally have that being quickly made and infusing it with their when all magic was being drained from Equestria. Sense magical artifacts took 3 days to be drained of their magic, and the amulet could be considered as one, explaining how the day and night where changing with the princesses not having their magic. 

Edited December 6, 2019 by Shady Mist

[Jane 120]

You are quite intelligent.