As a former evangelical, I experienced a number of occasions where we chased after some manifestation we thought was of God, but probably was not. It's too easy to get busy worshiping this kind of experience, instead of worshiping God.
You can watch this video at https://www.youtube.com/watch?v=Vz0ZKEQ1cpk
A compilation of video clips about Silvania Machado:
https://www.youtube.com/watch?v=xPxZsvtC6tE
Silvania Machado speaking at a church (starts when the "gold" manifests):
https://youtu.be/9SbFUP4SEx8?t=807
Some stories about the "gold dust" being proven untrue:
http://web.archive.org/web/20040204233930/http://www.wayoflife.org/fbns/miraclegold.htm
https://banner.org.uk/tb/golddust.htm
A testimony from a true believer in the glory dust: